Patent EP0140981A1 successfully refreshed from Google Patents.
US3436243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber particles coated with starch and talc
Assignee: Polysar Ltd
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Filing: 1965-01-14
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Granted: 1969-04-01
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Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:10
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |