US2741641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chlorinated compounds
Assignee: Velsicol Chemical LLC
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Filing: 1950-06-13
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Granted: 1956-04-10
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Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 Kleiman Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR CHLORINATING 4,5,6,7,,8,8-HEXACHLORO3A,4,7,7A-TETRAHYDRO-4,7-METHANOINDENE WHICH COMPRISES REACTING IT WITH CHLORINE IN A RELATIVELY INERT SOLVENT AND IN THE PRESENCE OF FULLER''S EARTH AS A CATALYST AT A TEMPERATURE OF FROM ABOUT -20* C. TO ABOUT 145* C. UNTIL FROM ABOUT 0.75 TO ABOUT 1.25 MOLE EQUIVALENTS OF CHORINE HAVE REACTED WITH EACH MOLE EQUIVALENT OF SAID INEDNE.
Claim 2
Independent Claim
58 words
A METHOD FOR CHLORINATING 4,5,6,7,,8,8-HEXACHLORO3A,4,7,7A-TETRAHYDRO-4,7-METHANOINDENE WHICH COMPRISES REACTING IT WITH CHLORINE IN A RELATIVELY INERT SOLVENT AND IN THE PRESENCE OF FULLER''S EARTH AS A CATALYST AT A TEMPERATURE OF FROM ABOUT -20* C. TO ABOUT 145* C. UNTIL FROM ABOUT 0.75 TO ABOUT 1.25 MOLE EQUIVALENTS OF CHORINE HAVE REACTED WITH EACH MOLE EQUIVALENT OF SAID INEDNE.
References Cited (Backward Citations)
US2519190A
Cited
US2576666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |