Patent US2424895A successfully refreshed from Google Patents.
US2865896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyacid esters
Assignee: PPG Industries Inc
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Filing: 1956-01-05
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Granted: 1958-12-23
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 Fekete Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/62; C07; C07C; C07C67/00; C07C67/10; C07C67/11; C07C69/00; C07C69/66; C07C69/67; C07C69/675
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
5 words
A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE STRUCTURE
Claim 3
Dependent Claim
17 words
A COPOLYMER OF THE COMPOUND OF CLAIM 1 AND A POLYMERIZABLE COMPOUND CONTAINING A TERMINAL CH2=C< GROUP.
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |