Patent US6256071B1 successfully refreshed from Google Patents.
US2885448A
Expired / Lapsed
US
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Halocarbon polymers
Assignee: Individual
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Filing: 1954-11-24
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Granted: 1959-05-05
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Expires: 1974-11-24
Abstract
No abstract record available.
Inventors
- 👤 William T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:03
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/278; C07C17/281; C07C45/00; C07C45/45; C07C45/455; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE NETHOD FOR PREPARING A POLYMER OF HEXAFLUOROBUTADIENE WHICH COMPRISES POLYMERIZING HEXAFLUROBYTADIENE IN A NON-POLYMERIZABLE ALIPHATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS CONTAINING CHLORINE AND ALIPHATIC HYDROCARBONS CONTAINING CHLORINE AND FLUORINE AS A CHAIN TRANSFER SOLVENT AND IN THE PRESENCE OF A POLYMERIZATION PROMOTER WHICH INITIATES FREE RADICALS SELECTED FROM THE GROUP CONSISTING OF THE ORGANIC PEROXIDES AND OXYGEN.
Claim 2
Dependent Claim
62 words
THE NETHOD FOR PREPARING A POLYMER OF HEXAFLUOROBUTADIENE WHICH COMPRISES POLYMERIZING HEXAFLUROBYTADIENE IN A NON-POLYMERIZABLE ALIPHATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS CONTAINING CHLORINE AND ALIPHATIC HYDROCARBONS CONTAINING CHLORINE AND FLUORINE AS A CHAIN TRANSFER SOLVENT AND IN THE PRESENCE OF A POLYMERIZATION PROMOTER WHICH INITIATES FREE RADICALS SELECTED FROM THE GROUP CONSISTING OF THE ORGANIC PEROXIDES AND OXYGEN.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |