US3198818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating organotin compounds
Assignee: M&T Chemicals Inc
•
Filing: 1960-08-22
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Granted: 1965-08-03
•
Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 John E Santo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:05
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2296
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR SEPARATING A MIXTURE CONSISTING ESSENTIALLY OF A TETRAHYDROCARBONTIN HAVING THE FORMULA R4SN AND A TRIHYDROCARBONTIN COMPOUND HAVING THE FORMULA R3SNX, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS HAVING 2 TO 18 CARBON ATOMS AND X IS SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, HYDROXIDE, AND OSNR3, COMPRISING CONTACTING SAID MIXTURE WITH METHYL ALCOHOL RESULTING IN THE SOLUTION OF THE TRIHYDROCARBONTIN COMPOUND IN THE METHYL ALCOHOL, AND THE TETRAHYDROCARBONTIN REMAINING IN A SEPARATE PHASE, AND THEN SEPARATING THE TWO PHASES.
Claim 2
Dependent Claim
88 words
A PROCESS FOR SEPARATING A MIXTURE CONSISTING ESSENTIALLY OF A TETRAHYDROCARBONTIN HAVING THE FORMULA R4SN AND A TRIHYDROCARBONTIN COMPOUND HAVING THE FORMULA R3SNX, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS HAVING 2 TO 18 CARBON ATOMS AND X IS SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, HYDROXIDE, AND OSNR3, COMPRISING CONTACTING SAID MIXTURE WITH METHYL ALCOHOL RESULTING IN THE SOLUTION OF THE TRIHYDROCARBONTIN COMPOUND IN THE METHYL ALCOHOL, AND THE TETRAHYDROCARBONTIN REMAINING IN A SEPARATE PHASE, AND THEN SEPARATING THE TWO PHASES.
References Cited (Backward Citations)
US2868820A
Cited
US2957785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |