Patent US3058086A successfully refreshed from Google Patents.
US3058086A
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US
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Assignee: Engelhard Industries Inc
•
Filing: 1958-06-16
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Granted: 1962-10-09
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Zwanzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:08
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/18; C23F2213/00; C23F2213/30; C23F2213/31; Y; Y10; Y10S; Y10S439/00; Y10S439/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731597A
Cited
US1831956A
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US2000688A
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US2126366A
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US2443654A
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US2639313A
Cited
US2655638A
Cited
US2740098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |