US3102087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization by gamma rays and novel products produced thereby
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1956-01-31
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Granted: 1963-08-27
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Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Jobard Michel Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:01
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
THE CONTINUOUS METHOD OF MAKING POLYVINYL CHLORIDE THAT COMPRISES FLOWING LIQUID VINYL CHLORIDE IN BULK, AT A RATE OF ABOUT 4 LITERS PER HOUR, INTO, THHROUGH, AND OUT OF A ZONE IRRADIATED BY GAMMA RAYS OF ABOUT 32 CURIES AT A TEMPERATURE OF ABOUT 62*C., SEPARATING MONOMER FROM POLYMER OUTSIDE THE ZONE, AND RETURNING THE MONOMER TO THE SAID ZONE.
Claim 2
Dependent Claim
60 words
THE CONTINUOUS METHOD OF MAKING POLYVINYL CHLORIDE THAT COMPRISES FLOWING LIQUID VINYL CHLORIDE IN BULK, AT A RATE OF ABOUT 4 LITERS PER HOUR, INTO, THHROUGH, AND OUT OF A ZONE IRRADIATED BY GAMMA RAYS OF ABOUT 32 CURIES AT A TEMPERATURE OF ABOUT 62*C., SEPARATING MONOMER FROM POLYMER OUTSIDE THE ZONE, AND RETURNING THE MONOMER TO THE SAID ZONE.
Claim 3
Dependent Claim
34 words
THE CONTINUOUS METHOD OF MAKING POLYCHLOROFLUOROETHYLENE THAT COMPRISES FLOWING MONOMERIC POLYCHLOROFLUOROETHYLENE CONTAINING ABOUT 0.1% BENZOYL PEROXIDE CATALYST INTO, THROUGH, AND OUT OF A ZONE IRRADIATED BY GAMMA RAYS OF POLYMERIZING INTENSITY AT A TEMPERATURE
Claim 4
Dependent Claim
34 words
THE CONTINUOUS METHOD OF MAKING POLYCHLOROFLUOROETHYLENE THAT COMPRISES FLOWING MONOMERIC POLYCHLOROFLUOROETHYLENE CONTAINING ABOUT 0.1% BENZOYL PEROXIDE CATALYST INTO, THROUGH, AND OUT OF A ZONE IRRADIATED BY GAMMA RAYS OF POLYMERIZING INTENSITY AT A TEMPERATURE
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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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |