US3027352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers
Assignee: Celanese Corp
•
Filing: 1960-10-19
•
Granted: 1962-03-27
•
Expires: 1980-10-19
Abstract
No abstract record available.
Inventors
- 👤 Cheves T Walling
- 👤 Brown Frank
- 👤 Bartz Kenneth William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:51
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/56; C08G2/10; C08G2/18; C08G2/22; C08G2/24; C10; C10L; C10L5/00; C10L5/40; Y; Y02; Y02E; Y02E50/00; Y02E50/30; Y10; Y10S; Y10S74/00; Y10S74/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A NORMALLY SOLID, SUBSTANTIALLY WATER-INSOLUBLE COPOLYMER WHOSE REPEATING UNITS CONSISTS ESSENTIALLY OF (A) -OCH2- GROUPS INTERSPERSED WITH (B)
Claim 2
Dependent Claim
18 words
A NORMALLY SOLID, SUBSTANTIALLY WATER-INSOLUBLE COPOLYMER WHOSE REPEATING UNITS CONSISTS ESSENTIALLY OF (A) -OCH2- GROUPS INTERSPERSED WITH (B)
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |