Patent US4720554A successfully refreshed from Google Patents.
US4720554A
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US
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Aromatic sulfonic acid salts of a proline derivative
Assignee: Ajinomoto Co Inc
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Filing: 1986-11-25
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Granted: 1988-01-19
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Expires: 2006-11-25
Abstract
Abstract A compound which is: ##STR1## wherein R may be 1 to 5 H, Cl, Br, F, C 1 -C 4 straight chain or branched alkyl, OH, or CF 3 .
Inventors
- 👤 Yasuo Irie
- 👤 Fusayoshi Kakizaki
- 👤 Chieko Ishijima
- 👤 Michito Sumikawa
- 👤 Naohiko Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/04; C07K5/06; C07K5/06086
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
A compound which is: ##STR6## wherein n is 0 to 5, Cl, Br, F, C 1 -C 4 straight chain or branched alkyl, OH, or CF 3 .
Claim 2
Dependent Claim
28 words
A compound which is: ##STR6## wherein n is 0 to 5, Cl, Br, F, C 1 -C 4 straight chain or branched alkyl, OH, or CF 3 .
Claim 3
Dependent Claim
17 words
The compound according to claim 1, wherein ##STR7## is unsubstituted or substituted with one CH 3 .
Claim 4
Dependent Claim
11 words
The compound according to claim 1, which is N.sup.ε -trifluoroacetyl-L-lysyl-L-proline benzenesulfonate.
Claim 5
Dependent Claim
11 words
The compound according to claim 1, which is N.sup.ε -trifluoroacetyl-L-lysyl-proline p-toluenesulfonate.
References Cited (Backward Citations)
US4472380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |