Patent US3417150A successfully refreshed from Google Patents.
US3417150A
Expired / Lapsed
US
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Polyhalophenols
Assignee: Coalite and Chemical Products Ltd
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Filing: 1965-06-28
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Granted: 1968-12-17
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Bondy
- 👤 James E F Williams
- 👤 Kirk Peter Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:35
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/02; C07C37/68; C07C37/70; C07C37/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A POLYCHLOROPHENOL COMPRISING SUBJECTING A POLYCHLOROBENZENE HAVING AT LEAST THREE CHLORINE ATOMS IN THE MOLECULE TO HYDROLYSIS WITH AN ALKALI METAL HYDROXIDE IN AN ALIPHATIC DIOL HAVING UP TO FOUR CARBON ATOMS, AT ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN AMOUNT, SUFFICIENT TO HINDER SUBLIMATION OF THE POLYCHLOROBENZENE, OF A CHLOROBENZENE HAVING FEWER CHLORINE ATOMS IN THE MOLECULE THAN THE SAID POLYCHLOROBENZENE.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A POLYCHLOROPHENOL COMPRISING SUBJECTING A POLYCHLOROBENZENE HAVING AT LEAST THREE CHLORINE ATOMS IN THE MOLECULE TO HYDROLYSIS WITH AN ALKALI METAL HYDROXIDE IN AN ALIPHATIC DIOL HAVING UP TO FOUR CARBON ATOMS, AT ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN AMOUNT, SUFFICIENT TO HINDER SUBLIMATION OF THE POLYCHLOROBENZENE, OF A CHLOROBENZENE HAVING FEWER CHLORINE ATOMS IN THE MOLECULE THAN THE SAID POLYCHLOROBENZENE.
References Cited (Backward Citations)
US2509245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |