US3026299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trioxane copolymers
Assignee: Celanese Corp
•
Filing: 1959-03-26
•
Granted: 1962-03-20
•
Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Kray
- 👤 Charles A Defazio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/10; C08G2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A NORMALLY SOLID COPOLYMER CONSISTING ESSENTIALLY OF OXYMETHYLENE GROUPS AND FROM 0.5 TO 50 MOL PERCENT OF GROUPS OF THE FORMULA
Claim 2
Dependent Claim
21 words
A NORMALLY SOLID COPOLYMER CONSISTING ESSENTIALLY OF OXYMETHYLENE GROUPS AND FROM 0.5 TO 50 MOL PERCENT OF GROUPS OF THE FORMULA
References Cited (Backward Citations)
US2373561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |