US3441632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing unsaturated polyester resins of improved air dry
Assignee: Resonac Corp
•
Filing: 1966-06-21
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Granted: 1969-04-29
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Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Hisao Tanaka
- 👤 Isamu Nishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:58
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; C08G63/02; C08G63/12; C08G63/52; C09; C09D; C09D167/00; C09D167/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |