Patent US3776980A successfully refreshed from Google Patents.
US3776980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters of methylcyclohexene-dicarboxylic anhydride
Assignee: Velsicol Chemical LLC
•
Filing: 1972-01-17
•
Granted: 1973-12-04
•
Expires: 1992-01-17
Abstract
Abstract THIS INVENTION DISCLOSES NEW AIR-DRYING POLYESTER COMPOSITIONS COMPRISING THE ADDUCT OF MALEIC ACID OR ANHYDRIDE AND TRANS-PIPERYLENE; ISOPHTHALIC ACID; AN UNSATURATED DICARBOXYLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, MALEIC ANHYDRIDE AND FUMARIC ACID; AND GLYCOL.
Inventors
- 👤 F Scardiglia
- 👤 I Dissen
- 👤 T Hokama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:05
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; C08G63/66; C08G63/668; C08G63/676
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |