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US3472798A
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Process of preparing stabilized suspension of polymethylmethacrylate microspheres in polyglycol-based polyurethane elastomers and resultant compositions
Assignee: PIERCE & STEVENS CHEMICAL Corp
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Filing: 1965-07-21
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Granted: 1969-10-14
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Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Lehi L Pitchforth Jr
- 👤 James A Struthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:10
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08K; C08K5/00; C08K5/04; C08K5/05; C08L75/00; C08L75/04; C08L2205/00; C08L2205/14; C08L2205/18; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L71/00; C08L71/02; Y; Y10; Y10S; Y10S264/00; Y10S264/06; Y10S277/00; Y10S277/924; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 0
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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) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |