US3642908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl and ether containing sulfones
Assignee: CHARLES J WRIGHT
•
Filing: 1969-08-22
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Granted: 1972-02-15
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Expires: 1989-08-22
Abstract
Abstract CERTAIN COMPOUNDS CONTAINING TWO OR MORE VINYLSULFONYLALKYL GROUPS ATTACHED TO A PLURALITY OF TERTIARY OR QUATERNARY NITROGEN ATOMS AND/OR TO A PLURALITY OF ETHER OXYGEN ATOMS ARE EFFECTIVE GELATIN HARDENERS.
Inventors
- 👤 Donald M Burness
- 👤 Stanley W Cowan
- 👤 Charles J Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; C; C07; C07C; C07C315/00; C07C315/04; C07C317/00; C07C317/16; C07C317/18; C07C323/00; C07C323/10; C07C323/11; C07C323/12; C08; C08L; C08L101/00
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |