US2970983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy-containing condensates of polyepoxides and acidic materials, their preparation and polymers
Assignee: Shell USA Inc
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Filing: 1956-09-10
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Granted: 1961-02-07
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/12; C08G59/18; C08G59/68; C08G59/686; C08G59/688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A LINEAR ACETONE-SOLUBLE NON-HEAT CURABLE EPOXYCONTAINING CONDENSATE OF AN ACIDIC MATERIAL OF THE GROUP CONSISTING OF POLYCARBOXYLIC ACIDS, POLYCARBOXYLIC ACID ANHYDRIDES AND MIXTURES THEREOF WITH FROM 1.5 TIMES. TO 4 TIMES THE CHEMICAL EQUIVALENT AMOUNT OF A POLYEPOXIDE CONTAINING MORE THAN ONE VIC-EPOXY GROUP AND HAVING NO ADDITIONAL SUBSTITUENT CAPABLE OF REACTING WITH SAID ACIDIC MATERIAL OTHER THAN HYDROXYL, THE EXPRESSION "EQUIVALENT AMOUNT" AS USED HEREIN REFERS TO THAT AMOUNT NEEDED TO FURNISH ONE ACIDIC GROUP PER EPOXY GROUP.
Claim 2
Dependent Claim
79 words
A LINEAR ACETONE-SOLUBLE NON-HEAT CURABLE EPOXYCONTAINING CONDENSATE OF AN ACIDIC MATERIAL OF THE GROUP CONSISTING OF POLYCARBOXYLIC ACIDS, POLYCARBOXYLIC ACID ANHYDRIDES AND MIXTURES THEREOF WITH FROM 1.5 TIMES. TO 4 TIMES THE CHEMICAL EQUIVALENT AMOUNT OF A POLYEPOXIDE CONTAINING MORE THAN ONE VIC-EPOXY GROUP AND HAVING NO ADDITIONAL SUBSTITUENT CAPABLE OF REACTING WITH SAID ACIDIC MATERIAL OTHER THAN HYDROXYL, THE EXPRESSION "EQUIVALENT AMOUNT" AS USED HEREIN REFERS TO THAT AMOUNT NEEDED TO FURNISH ONE ACIDIC GROUP PER EPOXY GROUP.
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |