Patent US3707578A successfully refreshed from Google Patents.
US3707578A
Expired / Lapsed
US
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Coating compositions containing phthalate esters
Assignee: Whittaker Corp
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Filing: 1970-09-10
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Granted: 1972-12-26
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Expires: 1990-09-10
Abstract
Abstract WHERE R IS AN ALKYL GROUP OR A CYCLOHEXYL GROUP, R1 IS HYDROGEN OR AN ALKYL GROUP, R2 IS -OH OR -CH2OH, AND X IS THE RESIDUE FROM PHTHALIC ACID, MALEIC ACID, OR SUCCINIC ACID, AND COATING COMPOSITIONS CONTAINING THESE COMPOUNDS. R-OOC-X-COO-CH2-C(-R1)(-R2)-CH2-OOC-X-COO-R COMPOUNDS OF THE FORMULA
Inventors
- 👤 Joseph A Vasta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C09; C09D; C09D161/00; C09D161/20
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |