Patent US2675398A successfully refreshed from Google Patents.
US2675398A
Expired / Lapsed
US
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Process of preparing an alkyl or aryl tin compound
Assignee: Primerica Inc
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Filing: 1950-09-29
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Granted: 1954-04-13
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Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
- 👤 Davidson Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:45
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF PRODUCING AN ORGANOTIN COMPOUND COMPRISING REACTING A COMPOUND OF THE CLASS CONSISTING OF AN ALKYL HALIDE AND ARYL HALIDE WITH TIN TETRACHLORIDE AND MAGNESIUM IN THE PRESENCE OF AN INERT HYDROCARBON SOLVENT AND IN THE PRESENCE OF A CATALYST IN MINOR PROPORTIONS NOT SUFFICIENT TO SERVE AS THE MAJOR SOLVENT.
Claim 2
Independent Claim
53 words
THE METHOD OF PRODUCING AN ORGANOTIN COMPOUND COMPRISING REACTING A COMPOUND OF THE CLASS CONSISTING OF AN ALKYL HALIDE AND ARYL HALIDE WITH TIN TETRACHLORIDE AND MAGNESIUM IN THE PRESENCE OF AN INERT HYDROCARBON SOLVENT AND IN THE PRESENCE OF A CATALYST IN MINOR PROPORTIONS NOT SUFFICIENT TO SERVE AS THE MAJOR SOLVENT.
References Cited (Backward Citations)
US2066198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |