Patent US3385827A successfully refreshed from Google Patents.
US3385827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trioxane terpolymers
Assignee: Hoechst AG
•
Filing: 1965-11-17
•
Granted: 1968-05-28
•
Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Fischer Edgar
- 👤 Schott Claus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:03
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C08G2/22; C08G2/24; C08G4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A COPOLYACETAL COMPRISING THE TERPOLYMERIZATION PRODUCT OF (A) 99.89% TO 89% OF TRIOXANE, (B) 0.1% TO 10% OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
23 words
A COPOLYACETAL COMPRISING THE TERPOLYMERIZATION PRODUCT OF (A) 99.89% TO 89% OF TRIOXANE, (B) 0.1% TO 10% OF A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3027352A
Cited
US3058921A
Cited
US3033803A
Cited
FR1271297A
Cited
US3293219A
Cited
US3275604A
Cited
US3278460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |