US2689240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer of cyclopentadiene and vinyl acetate
Assignee: PPG Industries Inc
•
Filing: 1952-05-09
•
Granted: 1954-09-14
•
Expires: 1972-05-09
Abstract
No abstract record available.
Inventors
- 👤 Gerhart Howard Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:58
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
AS A NEW COMPOSITION OF MATTER, A RESINOUS COPOLYMER COMPOSED OF CYCLOPENTADINE AND VINYL ACETATE CONTAINING FROM ABOUT 5 TO 56 PER CENT OF VINYL ACETATE.
Claim 2
Dependent Claim
26 words
AS A NEW COMPOSITION OF MATTER, A RESINOUS COPOLYMER COMPOSED OF CYCLOPENTADINE AND VINYL ACETATE CONTAINING FROM ABOUT 5 TO 56 PER CENT OF VINYL ACETATE.
References Cited (Backward Citations)
US2559790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |