US3236830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of polysaccharides
Assignee: —
•
Filing: —
•
Granted: 1966-02-22
•
Expires: 1983-02-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:07
CPC Classifications
C; C07; C07H; C07H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE PROCESS OF PREPARING POLYSACCHARIDES WHICH COMPRISES CONTACTING SUGARS CONTAINING A CARBONYL FUNCTION WITH POLYPHOSPHORIC ACID LOWER ALKYL ESTERS.
Claim 2
Dependent Claim
19 words
THE PROCESS OF PREPARING POLYSACCHARIDES WHICH COMPRISES CONTACTING SUGARS CONTAINING A CARBONYL FUNCTION WITH POLYPHOSPHORIC ACID LOWER ALKYL ESTERS.
References Cited (Backward Citations)
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Cited
US2375564A
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US2400423A
Cited
US2387275A
Cited
US2436967A
Cited
US2719179A
Cited
US3015654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |