Patent US3737480A successfully refreshed from Google Patents.
US3737480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester resin composition with a long shelf life
Assignee: WR Grace and Co Conn
•
Filing: 1970-11-13
•
Granted: 1973-06-05
•
Expires: 1990-11-13
Abstract
Abstract UNCURED, CURABLE, UNSATURATED POLYESTER RESIN COMPOSITIONS CONSISTING ESSENTIALLY OF AN UNSATURATED POLYESTER, AN ETHYLENICALLY UNSATURATED MONOMER SUCH AS STYRENE OR A SIMILAR MONOMER INHIBITED WITH ABOUT 0.1-1.5 MOLE PERCENT OF 4,6-DINITRO-O-CRESOL OR 2,4-DINITROANILINE HAVING SHELF LIVES IN EXCESS OF ABOUT 100 DAYS AT ABOUT 70*C.
Inventors
- 👤 E Stahly
- 👤 E Lard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; Y; Y10; Y10S; Y10S260/00; Y10S260/24
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |