Patent US3022286A successfully refreshed from Google Patents.
US3022286A
Expired / Lapsed
US
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Process for preparing higher fatty acid salts of neomycin
Assignee: S B PENICK AND Co
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Filing: 1959-12-14
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Granted: 1962-02-20
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Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Griendt Gerald H Van De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:55
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/226; C07H15/228; C07H15/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE PROCESS FOR PREPARING HIGHER FATTY ACIDS SALTS OF NEOMYCIN WHICH COMPRISES: DISSOLVING APPROXIMATELY STOICHIOMETRICALLY EQUIVALENT QUANTITIES OF NEOMYCIN BASE AND A HIGHER FATTY ACID IN A LOWER ALKANOL SO THAT THE FINAL PH OF THE REACTION MIXTURE IS BETWEEN ABOUT 6.5 AND ABOUT 7.5.
Claim 2
Dependent Claim
45 words
THE PROCESS FOR PREPARING HIGHER FATTY ACIDS SALTS OF NEOMYCIN WHICH COMPRISES: DISSOLVING APPROXIMATELY STOICHIOMETRICALLY EQUIVALENT QUANTITIES OF NEOMYCIN BASE AND A HIGHER FATTY ACID IN A LOWER ALKANOL SO THAT THE FINAL PH OF THE REACTION MIXTURE IS BETWEEN ABOUT 6.5 AND ABOUT 7.5.
References Cited (Backward Citations)
US2916483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |