US3380987A
Expired / Lapsed
US
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Process for preparing colored polyepoxide polymers
Assignee: Shell USA Inc
•
Filing: 1965-06-23
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Granted: 1968-04-30
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Richard A Palm
- 👤 Harald H O Cherdron
- 👤 Hans H W Ohse
- 👤 Friedrich W A G K Korte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1477; C08F; C08F8/00; C08F8/30; C08F8/32; C08G59/18; C08G59/40; C08G59/50; C08G59/5033; C09; C09B; C09B39/00; C09B69/00; C09B69/10; C09B69/106; Y; Y10; Y10S; Y10S534/00; Y10S534/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR PREPARING COLORED POLYMERS WHICH COMPRISES REACTING A POLYMERIC POLYEPOXIDE HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS WITH AN AMINE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
25 words
A PROCESS FOR PREPARING COLORED POLYMERS WHICH COMPRISES REACTING A POLYMERIC POLYEPOXIDE HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS WITH AN AMINE HAVING THE GENERAL FORMULA
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |