US2686127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alginic materials
Assignee: Alginate Industries Ltd
•
Filing: 1951-10-15
•
Granted: 1954-08-10
•
Expires: 1971-10-15
Abstract
No abstract record available.
Inventors
- 👤 Mcdowell Richard Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS OF PREPARING AN ALGINATE JELLY WHICH COMPRISES FIRST MIXING IN THE PRESENCE OF ADEQUATE MOISTURE CALCIUM ALGINATE AND A WATER SOLUBLE ORTHO-PHOSPHATE OF A BASE OF WHICH THE ALGINATE IS SOLUBLE IN WATER AND SUCH THAT IN THE RESULTING REACTION SUBSTANTIALLY ALL THE CALCIUM IS COMBINED AS TRICALCIUM PHOSPHATE, AND AFTER SUCH REACTION INTRODUCING THE PRODUCT INTO AN AQUEOUS MEDIUM WHICH IS TO BE GELLED AND GELLING BY MEANS OF A FREE ACID.
Claim 2
Dependent Claim
75 words
A PROCESS OF PREPARING AN ALGINATE JELLY WHICH COMPRISES FIRST MIXING IN THE PRESENCE OF ADEQUATE MOISTURE CALCIUM ALGINATE AND A WATER SOLUBLE ORTHO-PHOSPHATE OF A BASE OF WHICH THE ALGINATE IS SOLUBLE IN WATER AND SUCH THAT IN THE RESULTING REACTION SUBSTANTIALLY ALL THE CALCIUM IS COMBINED AS TRICALCIUM PHOSPHATE, AND AFTER SUCH REACTION INTRODUCING THE PRODUCT INTO AN AQUEOUS MEDIUM WHICH IS TO BE GELLED AND GELLING BY MEANS OF A FREE 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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |