US3632792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel-reinforced composite
Assignee: Monsanto Co
•
Filing: 1968-11-29
•
Granted: 1972-01-04
•
Expires: 1988-11-29
Abstract
Abstract A SHAPED COMPOSITE STRUCTURE COMPRISING STEEL FIBER 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 175*C. TO 400*C. AND A PRESSURE 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 STEEL FIBER.
Inventors
- 👤 Lawrence E Nielsen
- 👤 Joseph E Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:53
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |