Patent US3293950A successfully refreshed from Google Patents.
US3293950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire drawing die
Assignee: Dow Silicones Corp
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Filing: 1965-01-15
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Granted: 1966-12-27
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kern
- 👤 Dennis W Hamill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:48
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/18; B23; B23P; B23P15/00; B23P15/24; C; C23; C23C; C23C16/00; C23C16/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR MAKING DIES COMPRISING THE STEPS OF DEPOSITING FROM THE VAPOR PHASE A LAYER OF SILICON CARBIDE ON A SUBSTRATE, REMOVING THE SUBSTRATE, AND FINISHING SAID SILICON CARBIDE TO THE FINAL DIE CONFIGURATION.
Claim 2
Dependent Claim
35 words
A PROCESS FOR MAKING DIES COMPRISING THE STEPS OF DEPOSITING FROM THE VAPOR PHASE A LAYER OF SILICON CARBIDE ON A SUBSTRATE, REMOVING THE SUBSTRATE, AND FINISHING SAID SILICON CARBIDE TO THE FINAL DIE CONFIGURATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |