US3368988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent-soluble, non-gelled interpolymer comprising resinous hydroxy-terminated polyethylenically unsaturated polyurethane
Assignee: DeSoto Inc
•
Filing: 1963-04-09
•
Granted: 1968-02-13
•
Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Sekmakas Kazys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:38
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F299/00; C08F299/02; C08F299/06; C08F8/00; C08G18/30; C08G18/36; C08G18/671; C08G18/6715
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A SOLVENT-SOLUBLE, HEAT-HARDENING, NON-GELLED INTERPOLYMER COMPRISING: (A) AN AMIDE OF AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID; AND (B) RESINOUS HYDROXYTERMINATED POLYETHYLENICALLY UNSATURATED POLYURETHANE; SAID INTERPOLYMER HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE:
Claim 2
Dependent Claim
32 words
A SOLVENT-SOLUBLE, HEAT-HARDENING, NON-GELLED INTERPOLYMER COMPRISING: (A) AN AMIDE OF AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID; AND (B) RESINOUS HYDROXYTERMINATED POLYETHYLENICALLY UNSATURATED POLYURETHANE; SAID INTERPOLYMER HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |