US3509079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyether polyol compositions containing expandable styrene polymer beads
Assignee: Dow Chemical Co
•
Filing: 1969-03-06
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Granted: 1970-04-28
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Expires: 1989-03-06
Abstract
No abstract record available.
Inventors
- 👤 Michael A Hyde
- 👤 Jerry D Ilavsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:09
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/35; C08J2375/00; C08J2375/04; C08J2375/08; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/07
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) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |