Patent US3295725A successfully refreshed from Google Patents.
US4748069A
Expired / Lapsed
US
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Liquid absorbing and immobilizing packet and paper therefor
Assignee: Multisorb Technologies Inc
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Filing: 1986-06-20
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Granted: 1988-05-31
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Expires: 2006-06-20
Abstract
Abstract A packet for absorbing and immobilizing a liquid including an envelope which is degradable in the liquid and a liquid absorbing and immobilizing material in the envelope. The envelope has a dot matrix coating of heat-fusible material on degradable starch paper. The dot matrix coating permits heat-sealing of the envelope having the uncoated portions of the starch paper to degrade in solutions in which the dot matrix coating is insoluble. A paper product including a paper which is degradable in liquid and a dot matrix pattern of material on the paper for causing portions of the paper to adhere to each other.
Inventors
- 👤 John S. Cullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:49
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; B; B65; B65D; B65D65/00; B65D65/38; B65D65/46; B65D81/00; B65D81/24; B65D81/26; B65D81/264; Y; Y02; Y02W; Y02W90/00; Y02W90/10; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24934
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
106 words
A packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope, said envelope including a layer of material which is degradable in said liquid, and a patterned coating of sealing material in said layer of material with uncoated portions of said layer of material within said patterned coating which can remain exposed to be contacted directly by and degraded by said liquid, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit said layer of material to be sealed in the form of said envelope.
Claim 2
Dependent Claim
106 words
A packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope, said envelope including a layer of material which is degradable in said liquid, and a patterned coating of sealing material in said layer of material with uncoated portions of said layer of material within said patterned coating which can remain exposed to be contacted directly by and degraded by said liquid, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit said layer of material to be sealed in the form of said envelope.
Claim 3
Dependent Claim
19 words
A packet as set forth in claim 1 wherein said a liquid absorbing and immobilizing material is sodium polyacrylate.
Claim 4
Dependent Claim
27 words
A packet as set forth in claim 1 wherein said layer of material is starch paper, and wherein said patterned coating of sealing material is polyvinyl acetate.
Claim 5
Dependent Claim
21 words
A packet as set forth in claim 1 wherein said patterned coating of sealing material is in a dot matrix pattern.
Claim 6
Dependent Claim
146 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope, said envelope including a layer of material which is degradable in said liquid, and a patterned coating of sealing material on said layer of material with uncoated portions of said layer of material within said patterned coating which can remain exposed to be contacted directly by and degraded by said liquid, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit said layer of material to be sealed in the form of said envelope.
Claim 7
Dependent Claim
146 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope, said envelope including a layer of material which is degradable in said liquid, and a patterned coating of sealing material on said layer of material with uncoated portions of said layer of material within said patterned coating which can remain exposed to be contacted directly by and degraded by said liquid, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit said layer of material to be sealed in the form of said envelope.
Claim 8
Dependent Claim
41 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said layer of material comprises starch paper, and wherein said patterned coating of sealing material comprises polyvinyl acetate.
Claim 9
Dependent Claim
31 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said absorbing and immobilizing material is sodium polyacrylate.
Claim 10
Dependent Claim
67 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said envelope has an inner surface and an outer surface, and wherein said layer of material comprises said outer surface of said envelope and wherein said patterned coating of sealing material is in a dot matrix pattern on said inner surface of said envelope.
Claim 11
Dependent Claim
89 words
A paper product comprising a degradable paper which is degradable in liquid, and a patterned coating of sealing material on said degradable paper with uncoated portions of said degradable paper within said patterned coating, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit portions of said degradable paper having said patterned coating thereon to be sealed to other portions of said degradable paper while said patterned coating does not obstruct degradation of said uncoated portions of said degradable paper within said patterned coating.
Claim 12
Dependent Claim
89 words
A paper product comprising a degradable paper which is degradable in liquid, and a patterned coating of sealing material on said degradable paper with uncoated portions of said degradable paper within said patterned coating, said patterned coating of sealing material including portions which are sufficiently closely spaced to permit portions of said degradable paper having said patterned coating thereon to be sealed to other portions of said degradable paper while said patterned coating does not obstruct degradation of said uncoated portions of said degradable paper within said patterned coating.
Claim 13
Dependent Claim
22 words
A paper product as set forth in claim 9 wherein said patterned coating of sealing material is in a dot matrix pattern.
Claim 14
Dependent Claim
15 words
A paper product as set forth in claim 9 wherein said paper is starch paper.
Claim 15
Dependent Claim
22 words
A paper product as set forth in claim 11 wherein said patterned coating of sealing material is in a dot matrix pattern.
Claim 16
Dependent Claim
19 words
A paper product as set forth in claim 11 wherein said patterned coating of sealing material is polyvinyl acetate.
Claim 17
Dependent Claim
22 words
A paper product as set forth in claim 13 wherein said patterned coating of sealing material is in a dot matrix pattern.
Claim 18
Dependent Claim
98 words
A degradable envelope comprising a layer of degradable paper, a layer of a patterned coating of sealing material on said degradable paper with uncoating portions of said degradable paper within said patterned coating, said patterned coating including portions which are sufficiently closely spaced so as to cause seams to be formed when said portions of said degradable paper with said patterned coating thereon are lapped with other portions of said degradable paper and fused thereto, and seams fabricated from lapped portions of said degradable paper which are fused to each other by said patterned coating of sealing material.
Claim 19
Dependent Claim
98 words
A degradable envelope comprising a layer of degradable paper, a layer of a patterned coating of sealing material on said degradable paper with uncoating portions of said degradable paper within said patterned coating, said patterned coating including portions which are sufficiently closely spaced so as to cause seams to be formed when said portions of said degradable paper with said patterned coating thereon are lapped with other portions of said degradable paper and fused thereto, and seams fabricated from lapped portions of said degradable paper which are fused to each other by said patterned coating of sealing material.
Claim 20
Dependent Claim
22 words
A degradable envelope as set forth in claim 15 wherein said patterned coating of sealing material is in a dot matrix pattern.
Claim 21
Dependent Claim
16 words
A degradable envelope as set forth in claim 16 wherein said degradable paper is starch paper.
Claim 22
Dependent Claim
25 words
A degradable envelope as set forth in claim 15 wherein said lapped portions comprise portions of said layer of said patterned coating in face-to-face relationship.
Claim 23
Dependent Claim
25 words
A packet as set forth in claim 1 wherein said uncoated portions of said layer of material surround said sealing material of said patterned coating.
Claim 24
Dependent Claim
39 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said uncoated portions of said layer of material surround said sealing material of said patterned coating.
Claim 25
Dependent Claim
26 words
A paper product as set forth in claim 9 wherein said uncoated portions of said layer of material surround said sealing material of said patterned coating.
Claim 26
Dependent Claim
26 words
A degradable envelope as set forth in claim 15 wherein said uncoated portions of said layer of material surround said sealing material of said patterned coating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |