Patent US2851407A successfully refreshed from Google Patents.
US2851407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of chlorotrifluoroethylene
Assignee: Individual
•
Filing: 1952-03-20
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Granted: 1958-09-09
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Expires: 1972-03-20
Abstract
No abstract record available.
Inventors
- 👤 Mortimer H Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:37
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
THE METHOD OF POLYMERIZING MONOMERIC CHLOROTRIFLUOROETHYLENE WHICH COMPRISES MAINTAINING THE MONOMER DISPERSED IN WATER CONTAINING AN ULTRAVIOLET LIGHT-SENSITIVE PEROXY COMPOUND SOLELY BY CONSTANT MECHANICAL AGITATION, THE MIXTURE AS CHARGED TO THE REACTOR CONSISTING SOLELY OF THE MONOMER, THE WATER, AND THE SAID PEROXY COMPOUND, AND INITIATING THE POLYMERIZATION OF THE MONOMER BY IRREDIATING THE CONSTANTLY AGITATED MIXTURE WITH ULTRAVIOLET LIGHT TO EFFECT DECOMPOSITION OF THE PEROXY COMPOUND.
References Cited (Backward Citations)
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |