US3332858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for electroforming spinnerettes
Assignee: Celanese Corp
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Filing: 1964-03-23
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Granted: 1967-07-25
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Billy D Bittinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:55
CPC Classifications
C; C25; C25D; C25D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
PROCESS FOR THE PRODUCTION OF SPINNERETTES HAVING ORIFICES FOR THE EXTRUSION THERETHROUGH OF FILAMENT-FORMING MATERIAL, WHICH COMPRISES FORMING A MOLD HAVING SPACED PROJECTIONS WHICH ARE NEGATIVES OF SAID ORIFICES, SAID PROJECTIONS BEING MADE OF A RUBBERY POLYMER, AND GRADUALLY ELECTRODEPOSITING ON SAID MOLD A LAYER OF COHERENT METAL OF A THICKNESS OF AT LEAST ABOUT 0.03 INCH, SAID LAYER HAVING PROTUBERANCES ALIGNED WITH SAID PROJECTIONS, AND REMOVING SAID PROTUBERANCES TO EXPOSE THE APETURES FORMED BY SAID PROJECTIONS.
Claim 2
Dependent Claim
77 words
PROCESS FOR THE PRODUCTION OF SPINNERETTES HAVING ORIFICES FOR THE EXTRUSION THERETHROUGH OF FILAMENT-FORMING MATERIAL, WHICH COMPRISES FORMING A MOLD HAVING SPACED PROJECTIONS WHICH ARE NEGATIVES OF SAID ORIFICES, SAID PROJECTIONS BEING MADE OF A RUBBERY POLYMER, AND GRADUALLY ELECTRODEPOSITING ON SAID MOLD A LAYER OF COHERENT METAL OF A THICKNESS OF AT LEAST ABOUT 0.03 INCH, SAID LAYER HAVING PROTUBERANCES ALIGNED WITH SAID PROJECTIONS, AND REMOVING SAID PROTUBERANCES TO EXPOSE THE APETURES FORMED BY SAID PROJECTIONS.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |