Patent US3354232A successfully refreshed from Google Patents.
US3354232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature, short-contact-time pyrolysis of chlorodufluoromethane
Assignee: Pennwalt Corp
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Filing: 1965-10-20
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Granted: 1967-11-21
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Soulen John Richard
- 👤 Jr William Henry Chappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:56
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/269; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD WHICH COMPRISES PYROLYZING CHLORODIFLUOROMETHANE AT A TEMPERATURE OF FROM ABOUT 1300*C. TO ABOUT 2000*C. WHEREIN THE PYROLYSIS TIME IS FROM ABOUT 0.0001 TO ABOUT 0.06 SECOND, A MAJOR PORDUCT OF THE PYROLYSIS BEING 1,2-DICHLOROTETRAFLUOROETHANE.
Claim 2
Independent Claim
36 words
THE METHOD WHICH COMPRISES PYROLYZING CHLORODIFLUOROMETHANE AT A TEMPERATURE OF FROM ABOUT 1300*C. TO ABOUT 2000*C. WHEREIN THE PYROLYSIS TIME IS FROM ABOUT 0.0001 TO ABOUT 0.06 SECOND, A MAJOR PORDUCT OF THE PYROLYSIS BEING 1,2-DICHLOROTETRAFLUOROETHANE.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |