US2881150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of di-hydroxy alkyl substituted xylene
Assignee: PPG Industries Inc
•
Filing: 1956-04-26
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Granted: 1959-04-07
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Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 John J Jaruzelski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4222; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/40; C08G63/52; C08G63/66; C08G63/668; C08G63/672; C08G63/676
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A POLYESTER OF THE FORMULA:
References Cited (Backward Citations)
US2647099A
Cited
US2806834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |