US3179524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic co-polymeric materials and process
Assignee: Artrite Resins Ltd
•
Filing: 1960-10-28
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Granted: 1965-04-20
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Expires: 1980-10-28
Abstract
No abstract record available.
Inventors
- 👤 Hunter Donald Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:04
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C04B12/00; C04B12/02; C04B12/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PREPARING INORGANIC COPOLYMERS, WHICH PROCESS COMPRISES HEATING TO A TEMPERATURE BETWEEN 200 AND 600*C. A MIXTURE OF A LINEAR LITHIUM POLYMETAPHOSPHATE AND A FINELY DIVIDED OXIDE OF AN ELEMENT WHICH IS LOWER THAN PHOSPHORUS IN THE ELECTRONEGATIVITY SCALE AND ALSO HAS AN ATOMIC VOLUME SMALLER THAN THAT OF PHOSPHORUS UNTIL A COHERENT MASS OF INORGANIC COPOLYMER IS OBTAINED, SAID OXIDE BEING CAPABLE OF FORMING A MIXTURE SUBSTANTIALLY INSOLUBLE IN BOILING WATER WHEN HEATED WITH SAID POLYMETAPHOSPHATE AT ABOUT THE MELTING POINT OF THE POLYMETAPHOSPHATE.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PREPARING INORGANIC COPOLYMERS, WHICH PROCESS COMPRISES HEATING TO A TEMPERATURE BETWEEN 200 AND 600*C. A MIXTURE OF A LINEAR LITHIUM POLYMETAPHOSPHATE AND A FINELY DIVIDED OXIDE OF AN ELEMENT WHICH IS LOWER THAN PHOSPHORUS IN THE ELECTRONEGATIVITY SCALE AND ALSO HAS AN ATOMIC VOLUME SMALLER THAN THAT OF PHOSPHORUS UNTIL A COHERENT MASS OF INORGANIC COPOLYMER IS OBTAINED, SAID OXIDE BEING CAPABLE OF FORMING A MIXTURE SUBSTANTIALLY INSOLUBLE IN BOILING WATER WHEN HEATED WITH SAID POLYMETAPHOSPHATE AT ABOUT THE MELTING POINT OF THE POLYMETAPHOSPHATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |