US3216730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording needle and method of making the same
Assignee: JUNSHIRO OGURA
•
Filing: 1960-11-21
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Granted: 1965-11-09
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Expires: 1980-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ogura Kaemon
- 👤 Ogura Yoshigoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:08
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A DIAMOND RECORDING NEEDLE COMPRISING A NEEDLE STEM HAVING A FLAT TOP EXTENDING AT RIGHT ANGLES TO THE LONGITUDINAL AXIS OF SAID STEM AND A MERCURY PLATED DIAMOND PARTICLE SOLDERED TO THE TOP OF SAID NEEDLE STEM, SAID DIAMOND PARTICLE HAVING A POINT AT THE SIDE AWAY FROM SAID STEM, AND A METALLIC LAYER OF NICKEL INTERPOSED BETWEEN SAID MERCURY PLATED DIAMOND PARTICLE AND THE SOLDER.
Claim 2
Dependent Claim
66 words
A DIAMOND RECORDING NEEDLE COMPRISING A NEEDLE STEM HAVING A FLAT TOP EXTENDING AT RIGHT ANGLES TO THE LONGITUDINAL AXIS OF SAID STEM AND A MERCURY PLATED DIAMOND PARTICLE SOLDERED TO THE TOP OF SAID NEEDLE STEM, SAID DIAMOND PARTICLE HAVING A POINT AT THE SIDE AWAY FROM SAID STEM, AND A METALLIC LAYER OF NICKEL INTERPOSED BETWEEN SAID MERCURY PLATED DIAMOND PARTICLE AND THE SOLDER.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |