US3772141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper for graphic arts
Assignee: International Paper Co
•
Filing: 1972-05-19
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Granted: 1973-11-13
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Expires: 1992-05-19
Abstract
Abstract A graphic art paper composed of asbestos fiber, cellulose fiber and glass fiber and a cooperant partially cross-linked gelatin size, the synergistic mixture forming a non-puckering substrate for artists'' water colors.
Inventors
- 👤 C Chen
- 👤 R Matchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/18; B; B44; B44D; B44D3/00; B44D3/18; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H13/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2138325A
Cited
US3066066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |