Patent US3116351A successfully refreshed from Google Patents.
US3116351A
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US
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Process for production of amylose film
Assignee: Individual
•
Filing: 1962-09-21
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Granted: 1963-12-31
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 Frank C Wohlrabe
- 👤 Arthur M Mark
- 👤 William B Roth
- 👤 Charles L Mehltretter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:06
CPC Classifications
C; C08; C08L; C08L3/00; C08L3/12; C08J; C08J5/00; C08J5/18; C08J2303/00; C08J2303/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PROCESS FOR THE PRODUCTION OF SELF-SUPPORTING AMYLOSE FILM AT A FORMATION RATE OF ABOUT 400 FT./MIN. COMPRISING THE STEPS OF FORMING AN AQUEOUS SOLUTION CONTAINING FROM 16 TO 30 PERCENT BY WEIGHT OF AMYLOSE AND FROM ABOUT 2.5 TO 5 PERCENT OF SODIUM HYDROXIDE AND EXTRUDING SAID AMYLOSE SOLUTION INTO AN AQUEOUS COAGULATION MIXTURE WHOSE LIQUID PHASE CONSISTS OF 37.8 PERCENT BY WEIGHT OF AMMONIUM SULFATE AND 3.2 PERCENT BY WEIGHT OF SODIUM SULFATE AT BELOW -16*C. TO ABOUT -19.5*C.
Claim 2
Dependent Claim
80 words
PROCESS FOR THE PRODUCTION OF SELF-SUPPORTING AMYLOSE FILM AT A FORMATION RATE OF ABOUT 400 FT./MIN. COMPRISING THE STEPS OF FORMING AN AQUEOUS SOLUTION CONTAINING FROM 16 TO 30 PERCENT BY WEIGHT OF AMYLOSE AND FROM ABOUT 2.5 TO 5 PERCENT OF SODIUM HYDROXIDE AND EXTRUDING SAID AMYLOSE SOLUTION INTO AN AQUEOUS COAGULATION MIXTURE WHOSE LIQUID PHASE CONSISTS OF 37.8 PERCENT BY WEIGHT OF AMMONIUM SULFATE AND 3.2 PERCENT BY WEIGHT OF SODIUM SULFATE AT BELOW -16*C. TO ABOUT -19.5*C.
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |