US2559166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene copolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-05-26
•
Granted: 1951-07-03
•
Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Richard R Morner
- 👤 David T Mowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A COPOLYMER OF 80 TO 99 PER CENT BY WEIGHT OF STYRENE AND ONE TO 20 PER CENT OF THIANAPHTHENE-1-DIOXIDE.
Claim 2
Dependent Claim
20 words
A COPOLYMER OF 80 TO 99 PER CENT BY WEIGHT OF STYRENE AND ONE TO 20 PER CENT OF THIANAPHTHENE-1-DIOXIDE.
References Cited (Backward Citations)
US2418991A
Cited
US2456354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |