US2871236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyuronic acid choline-metal salts
Assignee: Sunkist Growers Inc
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Filing: 1956-05-14
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Granted: 1959-01-27
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Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:03
CPC Classifications
C; C07; C07H; C07H7/00; C07H7/02; C07H7/033
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A PROCESS FOR PREPARING A POLYURONIC ACID METAL SALT OF A CHOLINE BASE WHICH COMPRISES REACTING WITH AGITATION A MIXTURE OF AN AQUEOUS SUSPENSION OF A POLYURONIC ACID AND CHOLINE, ADDING TO SAID REACTED AQUEOUS SOLUTION A METAL SALT WITH AGITATION TO OBTAIN AN AMORPHOUS PRECIPITATE, WASHING SAID PRECIPITATE WITH ALCOHOL AND DRYING SAID PRECIPITATE.
References Cited (Backward Citations)
USRE22650E
Cited
US2494911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |