Patent US4115105A successfully refreshed from Google Patents.
US4115105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L-2-amino-4-(2-aminoethoxy)-butanoic acid
Assignee: Hoffmann La Roche Inc
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Filing: 1977-08-29
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Granted: 1978-09-19
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Expires: 1997-08-29
Abstract
Abstract L-2-amino-4-(2-aminoethoxy)-butanoic acid, methods for its preparation and novel intermediates employed in these processes are disclosed. L-2-amino-4-(2-aminoethoxy)-butanoic acid enhances ethylene production in fruit and therefore has utility as a ripening agent and as an abscission agent.
Inventors
- 👤 James Parnell Scannell
- 👤 Arthur Stempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:41
CPC Classifications
C; C12; C12P; C12P41/00; C12P41/006; C12P41/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
The L -antipode of the compound of the formula ##STR5## and the pharmaceutically acceptable acid addition salts thereof.
Claim 2
Dependent Claim
18 words
The L -antipode of the compound of the formula ##STR5## and the pharmaceutically acceptable acid addition salts thereof.
Claim 3
Dependent Claim
9 words
The compound of claim 1 which is L-2-amino-4-(2-aminoethoxy)-butanoic acid.
Claim 4
Dependent Claim
2 words
D,L-2-amino-4-(2-aminoethoxy)-butanoic acid.
Claim 5
Dependent Claim
2 words
D,L-2-amino-4-(2-aminoethoxy)-butanoic acid.
Claim 6
Independent Claim
48 words
A method of increasing the ripening of fruit which comprises the application to said fruit of an effective ethylene enhancing amount of an abscission agent selected from the group consisting of the L-antipode of the compound of the formula ##STR6## and the pharmaceutically acceptable acid addition salts thereof.
Claim 7
Independent Claim
48 words
A method of increasing the ripening of fruit which comprises the application to said fruit of an effective ethylene enhancing amount of an abscission agent selected from the group consisting of the L-antipode of the compound of the formula ##STR6## and the pharmaceutically acceptable acid addition salts thereof.
Claim 8
Dependent Claim
10 words
The abscission agent of claim 4 which is L-2-amino-4-(2-aminoethoxy)-butanoic acid.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |