US3580882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mica-reinforced composites
Assignee: Monsanto Co
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Filing: 1968-11-29
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Granted: 1971-05-25
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Expires: 1988-11-29
Abstract
Abstract A SHAPED COMPOSITE STRUCTURE COMPRISING FINELY COMMINUTED MICA AS REINFORCING FILLER IN A MATRIX COMPRISING THE ZINC SALT OF AN ACRYLIC ACID POLYMER, AND THE METHOD OF PREPARING THE SAME WHICH COMPRISES HEATING IN A MOLD AT A TEMPERATURE OF FROM ABOUT 5,000 P.S.I. TO 50,000 P.S.I. A MIXTURE OF ZINC OXIDE AND AN ACRYLIC ACID POLYMER IN CONTACT WITH THE MICA.
Inventors
- 👤 Lawrence E Nielsen
- 👤 Joseph E Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:26
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; C08K; C08K3/00; C08K3/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |