US2534193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of styrene and paravinylbenzyl compounds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1949-04-22
•
Granted: 1950-12-12
•
Expires: 1969-04-22
Abstract
No abstract record available.
Inventors
- 👤 William S Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:38
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A COPOLYMER OF 60 TO 99 PERCENT BY WEIGHT OF STYRENE AND ONE TO 40 PERCENT OF A COMPOUND OF THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
23 words
A COPOLYMER OF 60 TO 99 PERCENT BY WEIGHT OF STYRENE AND ONE TO 40 PERCENT OF A COMPOUND OF THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2383922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |