Patent US3329672A successfully refreshed from Google Patents.
US3329672A
Expired / Lapsed
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Carbonyl-containing starch derivatives and process for making same
Assignee: Unilever Bestfoods North America
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Filing: 1963-08-12
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Granted: 1967-07-04
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Hugh J Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:26
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AS A NEW COMPOSITION OF MATTER A STARCH DERIVATIVE HAVING A DEGREE OF SUBSITUTION OF A SMALL BUT DETECTABLE AMOUNT UP TO 3.0, THE SUBSITUTENT GROUP OF SAID DERIVATIVE COMPRISING AN UNINTERRUPTED CARBON CHAIN CONTAINING AT LEAST 2 CARBON ATOMS, SAID CARBON CHAIN INCLUDING A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES, AT LEAST ONE CARBON ATOM BEING POSITIONED BETWEEN SAID RADICAL AND THE STARCH MOLECULE.
Claim 2
Dependent Claim
69 words
AS A NEW COMPOSITION OF MATTER A STARCH DERIVATIVE HAVING A DEGREE OF SUBSITUTION OF A SMALL BUT DETECTABLE AMOUNT UP TO 3.0, THE SUBSITUTENT GROUP OF SAID DERIVATIVE COMPRISING AN UNINTERRUPTED CARBON CHAIN CONTAINING AT LEAST 2 CARBON ATOMS, SAID CARBON CHAIN INCLUDING A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES, AT LEAST ONE CARBON ATOM BEING POSITIONED BETWEEN SAID RADICAL AND THE STARCH MOLECULE.
References Cited (Backward Citations)
US3099573A
Cited
US3098869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |