US2984635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising alumina particles coated with polymer of ethylenically unsaturated monomer
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-06-03
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Granted: 1961-05-16
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Darrel M Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:21
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/407; B; B82; B82Y; B82Y30/00; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A LAMINAR ALUMINA HAVING PARTICLES 0.005 TO 0.10 MICRON AVERAGE THICKNESS AND 1 TO 10 MIRCONS AVERAGE LENGTH AND WIDTH AND HAVING DISPERSED ON THE SURFACE THEREOF FROM ABOUT 3% TO ABOUT 25% BY WEIGHT RELATIVE TO THE WEIGHT OF THE ALUMINA OF POLYMERIC POLYELECTROLYTE WHICH CONTAINS SUBSTANTIALLY LINEAR CONTINUOUS CARBON CHAINS PREPARED BY THE POLYMERIZATION OF AN ETHYLENICALLY UNSATURATED MONOMER AND HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT GREATER THAN 15,000.
Claim 2
Dependent Claim
71 words
A LAMINAR ALUMINA HAVING PARTICLES 0.005 TO 0.10 MICRON AVERAGE THICKNESS AND 1 TO 10 MIRCONS AVERAGE LENGTH AND WIDTH AND HAVING DISPERSED ON THE SURFACE THEREOF FROM ABOUT 3% TO ABOUT 25% BY WEIGHT RELATIVE TO THE WEIGHT OF THE ALUMINA OF POLYMERIC POLYELECTROLYTE WHICH CONTAINS SUBSTANTIALLY LINEAR CONTINUOUS CARBON CHAINS PREPARED BY THE POLYMERIZATION OF AN ETHYLENICALLY UNSATURATED MONOMER AND HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT GREATER THAN 15,000.
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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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |