Patent US2873288A successfully refreshed from Google Patents.
US2873288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of vinyl tin compounds
Assignee: Primerica Inc
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Filing: 1956-09-18
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Granted: 1959-02-10
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Expires: 1976-09-18
Abstract
No abstract record available.
Inventors
- 👤 Sanders D Rosenberg
- 👤 Jr Ambrose J Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF PREPARING MONOVINYLTIN TRIHALIDES, DIVINYLTIN DIHALIDES, AND TRIVINYLTIN MONOHALIDES BY A DISPROPORTIONATION REACTION COMPRISING MIXING STOICHIOMETRIC AMOUNTS OF A HALIDE SELECTED FROM THE CLASS CONSISTING OF TIN TETRAHALIDE, DIVINYLTIN DIHALIDE, AND VINYLTIN TRIHALIDE, WITH A VINYLTIN COMPOUND SELECTED FROM THE CLASS CONSISTING OF TETRAVINYLTIN, DIVINYLTIN DIHALIDE, AND TRIVNYLTIN MONOHALIDE, SAID HALIDE BEING SELECTED FROM THE CLASS CONSISTING OF CHLORIDES AND BROMIDES TO YIELD THE STOICHIOMETRICALLY DETERMINED VINYLTIN HALIDE, WHEREIN WHEN SAID HALIDE IS A VINYL TRIHALIDE, SAID VINYLTIN COMPOUND IS SELECTED FROM THE CLASS CONSISTING OF TETRAVINYLTIN AND TRIVINYLTIN MONOHALIDE, AND WHEREIN WHEN SAID HALIDE IS A DIVINYLTIN DIHALIDE, SAID VINYLTIN COMPOUND IS TETRAVINYLTIN.
Claim 2
Dependent Claim
106 words
THE PROCESS OF PREPARING MONOVINYLTIN TRIHALIDES, DIVINYLTIN DIHALIDES, AND TRIVINYLTIN MONOHALIDES BY A DISPROPORTIONATION REACTION COMPRISING MIXING STOICHIOMETRIC AMOUNTS OF A HALIDE SELECTED FROM THE CLASS CONSISTING OF TIN TETRAHALIDE, DIVINYLTIN DIHALIDE, AND VINYLTIN TRIHALIDE, WITH A VINYLTIN COMPOUND SELECTED FROM THE CLASS CONSISTING OF TETRAVINYLTIN, DIVINYLTIN DIHALIDE, AND TRIVNYLTIN MONOHALIDE, SAID HALIDE BEING SELECTED FROM THE CLASS CONSISTING OF CHLORIDES AND BROMIDES TO YIELD THE STOICHIOMETRICALLY DETERMINED VINYLTIN HALIDE, WHEREIN WHEN SAID HALIDE IS A VINYL TRIHALIDE, SAID VINYLTIN COMPOUND IS SELECTED FROM THE CLASS CONSISTING OF TETRAVINYLTIN AND TRIVINYLTIN MONOHALIDE, AND WHEREIN WHEN SAID HALIDE IS A DIVINYLTIN DIHALIDE, SAID VINYLTIN COMPOUND IS TETRAVINYLTIN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |