Patent US3979459A successfully refreshed from Google Patents.
US3979459A
Expired / Lapsed
US
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Substituted 4-phenyl benzophenones
Assignee: Imperial Chemical Industries Ltd
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Filing: 1974-05-07
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Granted: 1976-09-07
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Expires: 1994-05-07
Abstract
Abstract Compounds of the formula ##SPC1## Where X is ##SPC2## Or a group having the formula ##SPC3## In which m takes the value 1, 2 or 3 and where Q is fluorine, chloride, bromine or a hydroxyl group or alkali metal salt thereof. Compounds are also provided having the formula ##SPC4## Where Z is a hydrogen atom or a hydroxyl group (or alkali metal salt thereof) where Q is a hydroxyl group (or alkali metal salt thereof).
Inventors
- 👤 John Brewster Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:09
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C07C45/00; C07C45/45; C07C45/46; C07C45/51; C07C45/54; C07C49/80; C07C49/813
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
A compound of the formula ##SPC15## where M is hydrogen or alkali metal.
Claim 2
Dependent Claim
13 words
A compound of the formula ##SPC15## where M is hydrogen or alkali metal.
Claim 3
Dependent Claim
39 words
A compound of the formula ##SPC16## where X is a group having the formula ##SPC17## and Q is a fluorine, chlorine or bromine atom, a hydroxyl group or alkali metal salt thereof and may be the same or different.
Claim 4
Dependent Claim
39 words
A compound of the formula ##SPC16## where X is a group having the formula ##SPC17## and Q is a fluorine, chlorine or bromine atom, a hydroxyl group or alkali metal salt thereof and may be the same or different.
Claim 5
Dependent Claim
39 words
A compound of the formula ##SPC18## where X is a group having the formula ##SPC19## and Q is a fluorine, chlorine or bromine atom, a hydroxyl group or alkali metal salt thereof and may be the same or different.
Claim 6
Dependent Claim
39 words
A compound of the formula ##SPC18## where X is a group having the formula ##SPC19## and Q is a fluorine, chlorine or bromine atom, a hydroxyl group or alkali metal salt thereof and may be the same or different.
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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |