Patent US3553174A successfully refreshed from Google Patents.
US3553174A
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US
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Reaction product of a hydroxyacrylate and an aliphatic isocyanate and transparent article made therefrom
Assignee: Amicon Corp
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Filing: 1967-11-27
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Granted: 1971-01-05
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Expires: 1987-11-27
Abstract
Abstract A NEW PROCESS FOR FORMING TRANSPARENT AND ABRASIONRESISTANT ARTICLES OF HIGH IMPACT RESISTANCE COMPRISING THE STEPS OF CARRYING OUT STEP-GROWTH POLYMERIZATION OF AN ALIPHATIC ISOCYANATE COMPOUND AND A HYDROXYACRYLATE COMPOUND WHILE CONCURRENTLY CARRYING OUT CHAIN-GROWTH POLYMERIZATION OF SAID HYDROXYACRYLATE COMPOUND. THE INVENTION ALSO RELATES TO NOVEL COMPOSITIONS OF MATTER FORMED BY THE AFORESAID PROCESS AND TO THE NOVEL TRANSPARENT ARTICLES FORMED THEREWITH.
Inventors
- 👤 Robert W Hausslein
- 👤 Arthur L Walitt
- 👤 Henry E Molvar Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |