US3365593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric transducers
Assignee: Phillips Petroleum Co
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Filing: 1965-10-21
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Granted: 1968-01-23
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Lewis B Roof
- 👤 Halkiades George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/005; Y; Y10; Y10S; Y10S310/00; Y10S310/80; Y10S73/00; Y10S73/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
VIBRATION DETECTING APPARATUS COMPRISING: A FIRST AND SECOND ELECTRODES SPACED FROM ONE ANOTHER; A MEMBER ENGAGING SAID ELECTRODES AND EXTENDING THEREBETWEEN SO AS TO BE ADAPTED TO BE SUBJECTED TO VIBRATIONS TO BE DETECTED, SAID MEMBER COMPRISING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE TERAPHTHALATE, POLYTETRAFLUOROETHYLENE, POLYETHYLENE, POLYPROPYLENE, POLYIMIDE FORMED FROM THE POLYCONDENSATION REACTION BETWEEN PYROMELLITIC DIANHYDRIDE AND AN AROMATIC DIAMINE,
Claim 2
Dependent Claim
63 words
VIBRATION DETECTING APPARATUS COMPRISING: A FIRST AND SECOND ELECTRODES SPACED FROM ONE ANOTHER; A MEMBER ENGAGING SAID ELECTRODES AND EXTENDING THEREBETWEEN SO AS TO BE ADAPTED TO BE SUBJECTED TO VIBRATIONS TO BE DETECTED, SAID MEMBER COMPRISING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE TERAPHTHALATE, POLYTETRAFLUOROETHYLENE, POLYETHYLENE, POLYPROPYLENE, POLYIMIDE FORMED FROM THE POLYCONDENSATION REACTION BETWEEN PYROMELLITIC DIANHYDRIDE AND AN AROMATIC DIAMINE,
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |