US3758324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross linking agents for paper binders and paper coated therewith
Assignee: Honeywell International Inc
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Filing: 1971-12-23
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Granted: 1973-09-11
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Expires: 1991-12-23
Abstract
Abstract CROSS-LINKING AGENTS FOR PAPER BINDER COATING COMPOSIIONS, WHICH AGENTS COMPRISE COMPOUNDS HAVING THE GENERAL FORMULA: 2,5-DI(O=),1-R2,3-R3,4-R4,6-R1,6A-CH3-PERHYDROIMIDAZO- (4,5-D)IMIDAZOLE WHEREIN R1, R2, R3 AND R4 ARE HYDROGEN OR HYDROXYALKYL OF 1 TO 10 CARBON ATOMS, WITH THE PROVISO THAT AT LEAST ONE OF R1, R2, R3 AND R4 IS HYDROXYLAKYL OF 1 TO 10 CARBON ATOMS. PREFERRED COMPOUNDS INCLUDE MONO-, DI-, TRI- AND TETRA-N-HYDROXYMETHYL METHYLGLYCLURILS.
Inventors
- 👤 R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:30
CPC Classifications
C; C08; C08H; C08H1/00; C08B; C08B31/00; C08B31/003; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |