Patent US2514895A successfully refreshed from Google Patents.
US2514895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl allyloxyalkyl maleates
Assignee: Rohm and Haas Co
•
Filing: 1947-08-20
•
Granted: 1950-07-11
•
Expires: 1967-08-20
Abstract
No abstract record available.
Inventors
- 👤 Harry T Neher
- 👤 Edwin H Krocker
- 👤 Willard J Croxall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:45
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/10; C08F22/26; C08F22/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COPOLYMER BASED ON SIXTY TO NINETY PARTS BY WEIGHT OF AN ESTER OF THE FORMULA
Claim 2
Dependent Claim
16 words
A COPOLYMER BASED ON SIXTY TO NINETY PARTS BY WEIGHT OF AN ESTER OF THE FORMULA
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |