Patent US2806843A successfully refreshed from Google Patents.
US2806843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclodiene sulfo-resin and process of preparing the same
Assignee: Carter Bell Manufacturing Co
•
Filing: 1953-04-01
•
Granted: 1957-09-17
•
Expires: 1973-04-01
Abstract
No abstract record available.
Inventors
- 👤 Welch Lester Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:39
CPC Classifications
C; C08; C08G; C08G75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A THERMOPLASTIC RESIN OBTAINED BY HEATING AT A TEMPERATURE BETWEEN ABOUT 280* AND 350*F. A MIXTURE OF 30 TO 300 PARTS OF SULFUR AND 100 PARTS OF AN UNSATURATED HYDROCARBON MATERIAL CONSISTING OF A CYCLIC DIOLEFIN SELECTED FROM THE GROUP CONSISTING OF MONOMER, DIMER, TRIMER, TETRAMER, AND PENTAMER OF CYCLOPENTADIENE AND METHYLCYCLOPENTADIENE, RESPECTIVELY, AND MIXTURES THEREOF.
Claim 2
Dependent Claim
56 words
A THERMOPLASTIC RESIN OBTAINED BY HEATING AT A TEMPERATURE BETWEEN ABOUT 280* AND 350*F. A MIXTURE OF 30 TO 300 PARTS OF SULFUR AND 100 PARTS OF AN UNSATURATED HYDROCARBON MATERIAL CONSISTING OF A CYCLIC DIOLEFIN SELECTED FROM THE GROUP CONSISTING OF MONOMER, DIMER, TRIMER, TETRAMER, AND PENTAMER OF CYCLOPENTADIENE AND METHYLCYCLOPENTADIENE, RESPECTIVELY, AND MIXTURES THEREOF.
References Cited (Backward Citations)
US1926687A
Cited
US2387993A
Cited
US1882976A
Cited
US2225684A
Cited
US2316964A
Cited
US2309692A
Cited
US2398271A
Cited
US2516230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |