Patent US1151247A successfully refreshed from Google Patents.
Patent US2903473A successfully refreshed from Google Patents.
US2903473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of phenylchlorosilanes
Assignee: Individual
•
Filing: 1955-03-14
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Granted: 1959-09-08
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Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Takami Yasuo
- 👤 Araki Tsunao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:43
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF INHIBITING SIDE REACTIONS AND DECOMPOSITION IN THE PRODUCTION OF PHENYLCHLOROSILANES FROM THE DIRECT INTERACTION CHLOROBENZENE AND SILICON WITH THE SILICON ATOMS IN SAID PHENYLCHLOROSILANES BEING SUPPLIED BY SAID SILICON WHICH COMPRISES EFFECTING THE REACTION BETWEEN SAID CHLOROBENZENE AND SAID SILICON WHILE SAID REACTANTS ARE INTIMATELY ASSOCIATED WITH A SMALL BUT EFFECTIVE AMOUNT OF AN INHIBITOR SELECTED FROM THE GROUP CONSISTING OF ZINC, HALIDES OF ZINC, AND MIXTURES THEREOF.
Claim 2
Independent Claim
71 words
THE METHOD OF INHIBITING SIDE REACTIONS AND DECOMPOSITION IN THE PRODUCTION OF PHENYLCHLOROSILANES FROM THE DIRECT INTERACTION CHLOROBENZENE AND SILICON WITH THE SILICON ATOMS IN SAID PHENYLCHLOROSILANES BEING SUPPLIED BY SAID SILICON WHICH COMPRISES EFFECTING THE REACTION BETWEEN SAID CHLOROBENZENE AND SAID SILICON WHILE SAID REACTANTS ARE INTIMATELY ASSOCIATED WITH A SMALL BUT EFFECTIVE AMOUNT OF AN INHIBITOR SELECTED FROM THE GROUP CONSISTING OF ZINC, HALIDES OF ZINC, AND MIXTURES THEREOF.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |