Patent US3519444A successfully refreshed from Google Patents.
US3519444A
Expired / Lapsed
US
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Static mold release agent
Assignee: Qo Chemicals Inc
•
Filing: 1968-04-12
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Granted: 1970-07-07
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Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Brown
- 👤 Daniel S P Eftax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:52
CPC Classifications
B; B22; B22C; B22C3/00; B29; B29C; B29C33/00; B29C33/56; B29C33/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19396E
Cited
US2735814A
Cited
US2270770A
Cited
US2544598A
Cited
US2683296A
Cited
US3074802A
Cited
US3275460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |