Patent US3349079A successfully refreshed from Google Patents.
US3349079A
Expired / Lapsed
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⏱️ 0.0 years remaining
Gel forming alginate products and method of producing the same
Assignee: Kelco Co
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Filing: 1964-04-06
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Granted: 1967-10-24
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 John C Freedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:35
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN ALGINIC ACID SALT CAPABLE OF FORMING A HEAT RESISTANT AQUEOUS GEL, SAID SALT HAVING .25 TO .45 EQUIVALENT OF CALCIUM REACTED PER EQUIVALENT OF ALGINIC ACID, THE REMAINING .55 TO .75 EQUILVALENT OF SAID ACID BEING SUBSTANTIALLY ALL REACTED WITH A MATERIAL THAT WILL PRODUCE A WATER SOLUBLE SALT WHEN REACTED WITH ALGINIC ACID.
Claim 2
Dependent Claim
55 words
AN ALGINIC ACID SALT CAPABLE OF FORMING A HEAT RESISTANT AQUEOUS GEL, SAID SALT HAVING .25 TO .45 EQUIVALENT OF CALCIUM REACTED PER EQUIVALENT OF ALGINIC ACID, THE REMAINING .55 TO .75 EQUILVALENT OF SAID ACID BEING SUBSTANTIALLY ALL REACTED WITH A MATERIAL THAT WILL PRODUCE A WATER SOLUBLE SALT WHEN REACTED WITH ALGINIC ACID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |