US3561337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material for manufacture of transparencies
Assignee: Kalvar Corp
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Filing: 1966-08-15
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Granted: 1971-02-09
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Expires: 1986-08-15
Abstract
Abstract A sheet material having a transparent backing coated with a layer containing a polymeric binder and particles of solid material which is insoluble in the binder. The refractive index of the solid material varies from that of the binder by at most + OR - 0.6. The surface of the layer is ink receptive and, by printing on that surface, a transparency is obtained.
Inventors
- 👤 Jesse W Mulkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:29
CPC Classifications
G; G03; G03F; G03F1/00; G03F1/92; B; B41; B41M; B41M5/00; B41M5/50; B41M5/502; B41M5/508; B41M5/52; B41M5/5218; Y; Y10; Y10S; Y10S428/00; Y10S428/918; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
127 words
A sheet material for manufacture of a transparency said sheet material comprising a layer coated on a transparent backing said layer having an ink-receptive exposed surface for receiving printing which layer comprises a homogeneous mixture of: 1. a polymeric binder which has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick in at least a portion of the spectrum, and; 2. particles of a solid material which is insoluble in said binder and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength at which said binder has said transmittance, the refractive index of said solid material varying from the refractive index of said binder by at most + OR - 0.6.
Claim 2
Dependent Claim
127 words
A sheet material for manufacture of a transparency said sheet material comprising a layer coated on a transparent backing said layer having an ink-receptive exposed surface for receiving printing which layer comprises a homogeneous mixture of: 1. a polymeric binder which has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick in at least a portion of the spectrum, and; 2. particles of a solid material which is insoluble in said binder and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength at which said binder has said transmittance, the refractive index of said solid material varying from the refractive index of said binder by at most + OR - 0.6.
Claim 3
Dependent Claim
28 words
A sheet material as set forth in claim 1 in which said binder and said particles each has an index of refraction in the range 1.4 to 2.0.
Claim 4
Dependent Claim
60 words
particles of a solid material which is insoluble in said binder and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength at which said binder has said transmittance, the refractive index of said solid material varying from the refractive index of said binder by at most + or - 0.6.
Claim 5
Dependent Claim
60 words
particles of a solid material which is insoluble in said binder and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength at which said binder has said transmittance, the refractive index of said solid material varying from the refractive index of said binder by at most + or - 0.6.
Claim 6
Dependent Claim
76 words
about 80 to 20 percent by volume of said mixture of particles having a diameter of about 0.1 to 3 microns of a solid material which is Insoluble in said binder, has an index of refraction in the range 1.4 to 2.0 and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength between 3,400 and 6,000 angstrom units at which said binder has said light transmittance.
Claim 7
Dependent Claim
76 words
about 80 to 20 percent by volume of said mixture of particles having a diameter of about 0.1 to 3 microns of a solid material which is Insoluble in said binder, has an index of refraction in the range 1.4 to 2.0 and has a light transmittance of at least about 30 percent for a sample 0.00092 mm. thick at a wavelength between 3,400 and 6,000 angstrom units at which said binder has said light transmittance.
Claim 8
Dependent Claim
31 words
A sheet material as set forth in claim 1 in which the amounts of said binder and said particles are each 20 to 80 percent by volume of said sheet material.
Claim 9
Dependent Claim
22 words
A sheet material as set forth in claim 1 in which said particles have a diameter of about 0.1 to 3 microns.
Claim 10
Dependent Claim
21 words
A sheet material as set forth in claim 1 in which said homogeneous mixture is a coating on a transparent backing.
Claim 11
Dependent Claim
21 words
A sheet material as set forth in claim 5 in which the thickness of said coating is 0.02 to 5 mils.
Claim 12
Dependent Claim
39 words
A sheet material as set forth in claim 1 in which said particles and said binder have a light transmittance of at least 30 percent in at least a portion of the spectrum between 3,400 and 6,000 angstrom units.
Claim 13
Dependent Claim
28 words
A sheet material receptive to printing for manufacture of a transparency comprising a coating 0.02 to 5 mils thick on a transparent backing of a homogeneous mixture of:
Claim 14
Dependent Claim
28 words
A sheet material receptive to printing for manufacture of a transparency comprising a coating 0.02 to 5 mils thick on a transparent backing of a homogeneous mixture of:
Claim 15
Dependent Claim
16 words
A sheet material as set forth in claim 8 in which said particles are zinc oxide.
References Cited (Backward Citations)
US2425068A
Cited
US2518695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |