Patent US3275573A successfully refreshed from Google Patents.
US3275573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric epoxides
Assignee: Hercules LLC
•
Filing: 1964-06-30
•
Granted: 1966-09-27
•
Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:05
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G65/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A SOLID ESSENTIALLY WHOLLY AMORPHOUS COPOLYMER OF AN EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP AND AT LEAST ON OTHER EPOXIDE SELECTED FROM THE GROUP CONSISTING OF STYRENE OXIDE, CYCLOHEXENE OXIDE AND PHENYL GLYCIDYL ETHER, SAID COPOLYMER HAVING A REDUCED SPECIFIC VISCOSITY OF AT LEAST ABOUT 0.5 AS MEASURED ON A 0.1% SOLUTION OF THE COPOLYMER IN A-CHLORONAPHTHALENE AT 100*C, SAID EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP HAVING THE FORMULA
Claim 2
Dependent Claim
73 words
A SOLID ESSENTIALLY WHOLLY AMORPHOUS COPOLYMER OF AN EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP AND AT LEAST ON OTHER EPOXIDE SELECTED FROM THE GROUP CONSISTING OF STYRENE OXIDE, CYCLOHEXENE OXIDE AND PHENYL GLYCIDYL ETHER, SAID COPOLYMER HAVING A REDUCED SPECIFIC VISCOSITY OF AT LEAST ABOUT 0.5 AS MEASURED ON A 0.1% SOLUTION OF THE COPOLYMER IN A-CHLORONAPHTHALENE AT 100*C, SAID EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP HAVING THE FORMULA
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |