US3575897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed fluorinated hydrocarbon polymers
Assignee: Avco Corp
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Filing: 1969-06-06
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Granted: 1971-04-20
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Expires: 1989-06-06
Abstract
Abstract A METHOD OF MAKING LOW DENSITY POLYMERIC FOAM THROUGH THE UTILIZATION OF A FOAMING AGENT WHICH DISSOCIATES REVERSIBLY UNDER THE CONTROL OF TEMPERATURE AND PRESSURE.
Inventors
- 👤 William S Port
- 👤 Arthur R Taverna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J9/04; C08J9/06; C08J9/0066; C08J2203/00; C08J2203/04; C08J2205/00; C08J2205/04; C08J2205/05; C08J2205/052; C08J2327/00; C08J2327/02; C08J2327/12; C08J2427/00
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |