Patent JPS60219640A successfully refreshed from Google Patents.
US3376286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amylose esters from activated amylose
Assignee: AMF Inc
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Filing: 1964-07-24
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Granted: 1968-04-02
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Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Felix J Germino
- 👤 Raymond J Moshy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:08
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/20; C08B33/00; C08B33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF PREPARING AMYLOSE ESTERS COMPRISING PARTIALLY SWELLING THE AMYLOSE IN AN AQUEOUS MEDIUM IN A PERIOD NOT EXCEEDING 4 HOURS, PRECIPITATING THE SWOLLEN AMYLOSE WITH AN ORGANIC LIQUID COMPOUND WHICH IS MISCIBLE WITH WATER BUT WHICH IS A NON-SOLVENT FOR AMYLOSE, SEPARATING THE SOLID AMYLOSE FROM THE LIQUID PHASE, WASHING SAID AMYLOSE WITH AN ORGANIC NON-AQUEOUS NON-SOLVENT LIQUID AND REACTING SAID PRODUCT WITH AN ACYL COMPOUND.
Claim 2
Independent Claim
68 words
THE METHOD OF PREPARING AMYLOSE ESTERS COMPRISING PARTIALLY SWELLING THE AMYLOSE IN AN AQUEOUS MEDIUM IN A PERIOD NOT EXCEEDING 4 HOURS, PRECIPITATING THE SWOLLEN AMYLOSE WITH AN ORGANIC LIQUID COMPOUND WHICH IS MISCIBLE WITH WATER BUT WHICH IS A NON-SOLVENT FOR AMYLOSE, SEPARATING THE SOLID AMYLOSE FROM THE LIQUID PHASE, WASHING SAID AMYLOSE WITH AN ORGANIC NON-AQUEOUS NON-SOLVENT LIQUID AND REACTING SAID PRODUCT WITH AN ACYL COMPOUND.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |