Patent US3247289A successfully refreshed from Google Patents.
Patent US4489120A successfully refreshed from Google Patents.
US4489120A
Expired / Lapsed
US
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Archival container construction material
Assignee: Individual
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Filing: 1983-08-12
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Granted: 1984-12-18
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Expires: 2003-08-12
Abstract
Abstract Archival container construction materials including paper, paperboard (both solid fiber board and corrugated board) and, optionally, water-impermeable plastic, in both single- and multi-layer arrangement are disclosed. The container material provides an inner layer consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size. Outer layers of the container material comprise alpha-cellulose, an alkaline buffer and an alkaline size. Optionally, the inner liner and the outer layer(s) are separated by a water-impermeable plastic layer, e.g., polyester film.
Inventors
- 👤 William K. Hollinger, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B32B27/36; B32B29/00; B32B29/002; B32B29/005; B32B29/08; B32B3/00; B32B3/26; B32B3/28; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2439/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24942; Y10T428/24992; Y10T428/31504; Y10T428/31786; Y10T428/3179; Y10T428/31971; Y10T428/31975; Y10T428/31978
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
45 words
A boxboard comprising: a first layer of paperboard consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; a second layer of a paperboard comprising alpha-cellulose, an alkaline buffer and an alkaline size; and, intermediate said first and second layers, a layer of water-impermeable plastic.
Claim 2
Dependent Claim
45 words
A boxboard comprising: a first layer of paperboard consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; a second layer of a paperboard comprising alpha-cellulose, an alkaline buffer and an alkaline size; and, intermediate said first and second layers, a layer of water-impermeable plastic.
Claim 3
Dependent Claim
23 words
The boxboard as claimed in claim 1, wherein the pH of said second layer is not less than 7.5 nor more than 10.2.
Claim 4
Dependent Claim
19 words
The boxboard as claimed in claim 2, wherein said pH is not less than 8.5 nor more than 10.2.
Claim 5
Dependent Claim
44 words
The boxboard as claimed in claim 1, further comprising a third layer of paperboard, intermediate said layer of water-impermeable plastic and said second layer, comprising alpha-cellulose, an alkaline buffer and an alkaline size, said third layer having a lower density than said second layer.
Claim 6
Dependent Claim
18 words
The boxboard as claimed in claim 1, wherein said water-impermeable plastic layer is a layer of polyester film.
Claim 7
Dependent Claim
17 words
The boxboard as claimed in claim 1, wherein said second layer of paperboard is a corrugated paperboard.
Claim 8
Dependent Claim
56 words
A single wall corrugated boxboard comprising a first liner layer comprising alpha-cellulose, an alkaline buffer and an alkaline size; a second liner layer comprising a layer consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; and, intermediate said first and second liner layers, a corrugated medium comprising alpha-cellulose, an alkaline buffer, and an alkaline size.
Claim 9
Dependent Claim
56 words
A single wall corrugated boxboard comprising a first liner layer comprising alpha-cellulose, an alkaline buffer and an alkaline size; a second liner layer comprising a layer consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; and, intermediate said first and second liner layers, a corrugated medium comprising alpha-cellulose, an alkaline buffer, and an alkaline size.
Claim 10
Dependent Claim
58 words
The single wall corrugated boxboard as claimed in claim 11, wherein said second liner layer comprises: (a) a layer comprising alpha-cellulose, an alkaline buffer and an alkaline size, adjacent to said corrugated medium; (b) a layer consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; and, intermediate said layers (a) and (b), a layer of water-impermeable plastic.
Claim 11
Dependent Claim
21 words
The single wall corrugated boxboard as claimed in claim 8, wherein said water-impermeable plastic layer is a layer of polyester film.
Claim 12
Dependent Claim
76 words
A double wall corrugated boxboard comprising: first, second and third liner layers; a first corrugated medium, intermediate said first and second liner layers; and a second corrugated medium, intermediate said second and third liner layers; wherein said first and second liner layers and said first and second corrugated media comprise alpha-cellulose, an alkaline buffer and an alkaline size; and said third liner layer comprises a layer consisting of non-buffered, substantially pure, alpha-cellulose and an alkaline size.
Claim 13
Dependent Claim
76 words
A double wall corrugated boxboard comprising: first, second and third liner layers; a first corrugated medium, intermediate said first and second liner layers; and a second corrugated medium, intermediate said second and third liner layers; wherein said first and second liner layers and said first and second corrugated media comprise alpha-cellulose, an alkaline buffer and an alkaline size; and said third liner layer comprises a layer consisting of non-buffered, substantially pure, alpha-cellulose and an alkaline size.
Claim 14
Dependent Claim
59 words
The double wall corrugated boxboard as claimed in claim 10, wherein said third liner layer comprises (a) a layer comprising alpha-cellulose, an alkaline buffer and an alkaline size, adjacent to said second corrugated medium; (b) a layer consisting of non-buffered, substantially pure alpha-cellulose and an alkaline size; and, intermediate said layers (a) and (b), a layer of water-impermeable plastic.
Claim 15
Dependent Claim
21 words
The double wall corrugted boxboard as claimed in claim 10, wherein said water-impermeable plastic layer is a layer of polyester film.
Claim 16
Dependent Claim
60 words
An alkaline paper comprising a first paper layer comprising substantially pure alpha-cellulose, an alkaline buffer and an alkaline size, wherein the pH of said first paper layer is from 7.5 to 10.2; a second paper layer consisting of non-buffered, substantially pure, alpha-cellulose and an alkaline size; and, intermediate said first and second paper layers, a layer of water impermeable plastic.
Claim 17
Dependent Claim
60 words
An alkaline paper comprising a first paper layer comprising substantially pure alpha-cellulose, an alkaline buffer and an alkaline size, wherein the pH of said first paper layer is from 7.5 to 10.2; a second paper layer consisting of non-buffered, substantially pure, alpha-cellulose and an alkaline size; and, intermediate said first and second paper layers, a layer of water impermeable plastic.
Claim 18
Dependent Claim
20 words
The alkaline paper as claimed in claim 13, wherein said layer of water-impermeable plastic is a layer of polyester film.
Claim 19
Dependent Claim
16 words
The alkaline paper as claimed in claim 13, wherein said pH is from 8.5 to 10.2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |