US3440181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coated vermicular expanded graphite and polymer composition containing same
Assignee: Dow Chemical Co
•
Filing: 1965-03-22
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Granted: 1969-04-22
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Franciszek Olstowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J27/00; B01J27/20; B01J27/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |