US2575585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylates, polymers, and copolymers
Assignee: Wingfoot Corp
•
Filing: 1949-02-04
•
Granted: 1951-11-20
•
Expires: 1969-02-04
Abstract
No abstract record available.
Inventors
- 👤 Fred W Cox
- 👤 Jr James M Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:39
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C07; C07C; C07C69/00; C07C69/96
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
6 words
AN ESTER HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
AN ESTER HAVING THE STRUCTURAL FORMULA
Claim 3
Dependent Claim
8 words
A POLYMER OF THE COMPOUND OF CLAIM 1.
References Cited (Backward Citations)
US2141546A
Cited
US2384124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |