US3936479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic compounds
Assignee: Sandoz AG
•
Filing: 1973-05-04
•
Granted: 1976-02-03
•
Expires: 1993-05-04
Abstract
Abstract The present invention concerns benzophenone compounds of the formula:
Inventors
- 👤 Lajos Avar
- 👤 Kurt Hofer
- 👤 Martin Preiswerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:50
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/20; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
96 words
A compound of the formula: ##SPC15## wherein R 1 , r 2 , r 3 and R 3 are independently, hydrogen or alkyl of 1 to 4 carbon atoms, and X is phenyl which is substituted by hydroxy and 1 or 2 alkyls of 1 to 4 carbon atoms, or by alkoxy of 1 to 4 carbon atoms and 1 to 2 alkyls of 1 to 4 carbon atoms, or by phenyl sulphoxide; styryl; or phenylalkyl of 8 carbon atoms which is substituted by hydroxy and 1 or 2 alkyls of 1 to 4 carbon atoms.
Claim 2
Dependent Claim
96 words
A compound of the formula: ##SPC15## wherein R 1 , r 2 , r 3 and R 3 are independently, hydrogen or alkyl of 1 to 4 carbon atoms, and X is phenyl which is substituted by hydroxy and 1 or 2 alkyls of 1 to 4 carbon atoms, or by alkoxy of 1 to 4 carbon atoms and 1 to 2 alkyls of 1 to 4 carbon atoms, or by phenyl sulphoxide; styryl; or phenylalkyl of 8 carbon atoms which is substituted by hydroxy and 1 or 2 alkyls of 1 to 4 carbon atoms.
Claim 3
Dependent Claim
6 words
The compound, of the formula: ##SPC16##
Claim 4
Dependent Claim
6 words
The compound, of the formula: ##SPC16##
Claim 5
Dependent Claim
27 words
A compound of claim 1, wherein X is phenyl substituted by hydroxy and further substituted by 1 or 2 alkyls, each of 1 to 4 carbon atoms.
Claim 6
Dependent Claim
9 words
The compound of claim 3, of the formula: ##SPC17##
Claim 7
Dependent Claim
9 words
The compound of claim 3, of the formula: ##SPC18##
Claim 8
Dependent Claim
9 words
The compound of claim 3, of the formula: ##SPC19##
Claim 9
Dependent Claim
33 words
A compound of claim 1, wherein X is phenyl substituted by alkoxy of 1 to 4 carbon atoms and further substituted by 1 or 2 alkyls, each of 1 to 4 carbon atoms.
Claim 10
Dependent Claim
9 words
The compound of claim 7, of the formula: ##SPC20##
Claim 11
Dependent Claim
6 words
The compound, of the formula: ##SPC21##
Claim 12
Dependent Claim
6 words
The compound, of the formula: ##SPC21##
Claim 13
Dependent Claim
6 words
The compound, of the formula: ##SPC22##
Claim 14
Dependent Claim
6 words
The compound, of the formula: ##SPC22##
Claim 15
Dependent Claim
9 words
A compound of claim 1, wherein X is styryl.
Claim 16
Dependent Claim
9 words
The compound of claim 11, of the formula: ##SPC23##
Claim 17
Dependent Claim
13 words
A compound of claim 1, wherein X is phenyl substituted by phenyl sulphoxide.
Claim 18
Dependent Claim
9 words
The compound of claim 13, of the formula: ##SPC24##
Claim 19
Dependent Claim
28 words
A compound of the formula ##SPC25## wherein X is phenyl substituted by hydroxy and further substituted by 1 or 2 alkyls, each of 1 to 4 carbon atoms.
Claim 20
Dependent Claim
28 words
A compound of the formula ##SPC25## wherein X is phenyl substituted by hydroxy and further substituted by 1 or 2 alkyls, each of 1 to 4 carbon atoms.
Claim 21
Dependent Claim
9 words
The compound of claim 15, of the formula: ##SPC26##
Claim 22
Dependent Claim
32 words
A compound of claim 1, wherein X is phenylalkyl of 8 carbon atoms ring substituted by hydroxy and further substituted by 1 or 2 alkyls, each of 1 to 4 carbon atoms.
Claim 23
Dependent Claim
9 words
The compound of claim 17, of the formula: ##SPC27##
Claim 24
Dependent Claim
30 words
A compound of the formula ##SPC28## wherein R 1 , R 2 , R 3 and R 4 are each, independently, hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 25
Dependent Claim
30 words
A compound of the formula ##SPC28## wherein R 1 , R 2 , R 3 and R 4 are each, independently, hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 26
Dependent Claim
9 words
The compound of claim 19, of the formula: ##SPC29##
Claim 27
Dependent Claim
9 words
The compound of claim 19, of the formula: ##SPC30##
Claim 28
Dependent Claim
9 words
The compound of claim 19, of the formula: ##SPC31##
Claim 29
Dependent Claim
9 words
The compound of claim 19, of the formula: ##SPC32##
Claim 30
Dependent Claim
30 words
A compound of the formula ##SPC33## wherein R 1 , R 2 , R 3 and R 4 are each, independently, hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 31
Dependent Claim
30 words
A compound of the formula ##SPC33## wherein R 1 , R 2 , R 3 and R 4 are each, independently, hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 32
Dependent Claim
9 words
The compound of claim 24, of the formula: ##SPC34##
Claim 33
Dependent Claim
9 words
The compound of claim 24, of the formula: ##SPC35##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |