Patent US4100348A successfully refreshed from Google Patents.
US4100348A
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Triols containing hydantoin rings
Assignee: BASF Corp
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Filing: 1976-05-21
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Granted: 1978-07-11
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Expires: 1996-05-21
Abstract
Abstract The invention relates to new triols of the formula <IMAGE> wherein R1 and R2 denote hydrogen, methyl, ethyl or isobutyl, or together denote tetramethylene or pentamethylene, R3 denotes hydrogen or methyl, and R4 denotes hydrogen or methyl or ethyl.
Inventors
- 👤 Jurgen Habermeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:42
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/76; C07D233/78; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3848
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A triol of formula I ##STR9## wherein R 1 and R 2 each denote hydrogen, methyl, ethyl or isobutyl, or together denote tetramethylene or pentamethylene, R 3 denotes hydrogen or methyl, and R 4 denotes hydrogen or methyl or ethyl.
Claim 2
Dependent Claim
40 words
A triol of formula I ##STR9## wherein R 1 and R 2 each denote hydrogen, methyl, ethyl or isobutyl, or together denote tetramethylene or pentamethylene, R 3 denotes hydrogen or methyl, and R 4 denotes hydrogen or methyl or ethyl.
Claim 3
Dependent Claim
43 words
A triol according to claim 1 of formula I, wherein R 1 denotes methyl or ethyl and R 2 denotes methyl, or R 1 and R 2 together denote pentamethylene group, R 3 represents hydrogen and R 4 hydrogen or the methyl group.
Claim 4
Dependent Claim
27 words
A triol according to claim 1 of formula I, wherein R 1 and R 2 represent the methyl group, and R 3 and R 4 represent hydrogen.
References Cited (Backward Citations)
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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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |