US3629388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting procedure for high quality epoxy layers
Assignee: Ampex Corp
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Filing: 1970-01-12
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Granted: 1971-12-21
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Expires: 1990-01-12
Abstract
Abstract A PRECISION EPOXY RESIN STRUCTURE IS PREPARED BY CASTING AN EPOXY RESIN ON A MOLD OF OXIDIZED COPPER OR SILVER. THE METHOD IS PARTICULARLY ADAPTED FOR MAKING FLAT EPOXY SUBSTRATES FOR CLOSED FLUX STORAGE ELEMENTS.
Inventors
- 👤 Irving W Wolf
- 👤 Heinz Lienhard
- 👤 Moses I Levitsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60
Claims Analysis
Total Claims: 0
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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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |