US3351620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of unsaturated cyclic hydrocarbons and mixtures thereof with olefinic hydrocarbons
Assignee: Teijin Ltd
•
Filing: 1964-02-12
•
Granted: 1967-11-07
•
Expires: 1984-02-12
Abstract
No abstract record available.
Inventors
- 👤 Yamada Noborn
- 👤 Shimada Keizo
- 👤 Takemura Toshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:18
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F12/00; C08F12/02; C08F12/04; C08F244/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE UNSATURATED CYCLIC HYDROCARBONS OR MIXTURES THEREOF WITH AN ALIPHATIC MONOOLEFIN HAVING FROM 3 TO 10 CARBON ATOMS, WHEREIN SAID POLYMERIZATION IS CARRIED OUT IN AN INERT ORGANIC SOLVENT IN THE PRESENCE OF A CATALYST CONSISTING OF VOCL3.
Claim 2
Dependent Claim
44 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE UNSATURATED CYCLIC HYDROCARBONS OR MIXTURES THEREOF WITH AN ALIPHATIC MONOOLEFIN HAVING FROM 3 TO 10 CARBON ATOMS, WHEREIN SAID POLYMERIZATION IS CARRIED OUT IN AN INERT ORGANIC SOLVENT IN THE PRESENCE OF A CATALYST CONSISTING OF VOCL3.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |