US3239494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium perchlorate as catalyst for vinyl polymerizations
Assignee: Monsanto Research Corp
•
Filing: 1962-07-02
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Granted: 1966-03-08
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Russell B Hodgdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:11
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE POLYMERIZATION OF A VINYL MONOMER HAVING A PI ELECTRON DENSITY ABOVE THE PI ELECTRON DENSITY OF ETHYLENE TO FORM A POLYMERIC MATERIAL, SAID PROCESS COMPRISING CONTACTING SAID VINYL MONOMER WITH A CATALYST CONSISTING ESSENTIALLY OF LITHIUM PERCHLORATE UNDER POLYMERIZATION CONDITIONS AND RECOVERING SAID POLYMERIC MATERIAL AS PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE POLYMERIZATION OF A VINYL MONOMER HAVING A PI ELECTRON DENSITY ABOVE THE PI ELECTRON DENSITY OF ETHYLENE TO FORM A POLYMERIC MATERIAL, SAID PROCESS COMPRISING CONTACTING SAID VINYL MONOMER WITH A CATALYST CONSISTING ESSENTIALLY OF LITHIUM PERCHLORATE UNDER POLYMERIZATION CONDITIONS AND RECOVERING SAID POLYMERIC MATERIAL AS PRODUCT OF THE PROCESS.
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |