Patent US3703499A successfully refreshed from Google Patents.
US3703499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusible thermosetting powder resin and production thereof
Assignee: Individual
•
Filing: 1971-01-28
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Granted: 1972-11-21
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Expires: 1991-01-28
Abstract
Abstract THERMOPLASTIC RESIN POWDER CONTAINING ACTIVE HYDROGEN IS MULLED WITH A STOICHIMETRIC DEFICIENCY OF LIQUID ALKOXY MONOISOCYANATE. THIS CONSUMES THE ACTIVE HYDROGEN ATOMS AT THE SURFACE OF THE POWDER, GENERATING ALKOXY GROUPS AT THE SURFACE SURROUNDING A CORE CONTAINING UNREACTED ACTIVE HYDROGEN ATOMS. WHEN THE POWDER IS FUSED, THE ACTIVE HYDROGEN ATOMS REMAINING IN THE CORE MIX WITH THE ALKOXY GROUPS GENERATED AT THE SURFACE TO INDUCE A RAPID THERMOSETTING ACTION AFTER SIGNIFICANT FUSION HAS BEEN COMPLETED.
Inventors
- 👤 Martin K Lindemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:00
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/711; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; C08G18/6216; C08G18/622; C08G18/6225; C08G18/718; C08J; C08J3/00; C08J3/24; C08J3/241; C08G2140/00; C08G2150/00; C08G2150/20; Y; Y10; Y10S; Y10S528/00; Y10S528/902
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |