US3230402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric crystal
Assignee: Individual
•
Filing: 1963-08-15
•
Granted: 1966-01-18
•
Expires: 1983-08-15
Abstract
No abstract record available.
Inventors
- 👤 Anne B Nightingale
- 👤 Richard M Gutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:53
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/10; H03H9/1007; H10; H10N; H10N30/00; H10N30/30; H10N30/80; H10N30/88; H10N30/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
AN ELECTRICAL GENERATING DEVICE COMPRISING THE COMBINATION OF A PIEZOELECTRIC CRYSTAL HELD IN A STATE OF COMPRESSION BY COMPRESSIVELY STRESSED THERMOPLASTIC ENVELOPE ENCAPSULATING SAID CRYSTAL, THE SAID COMPRESSION BEING RELEASABLE UPON INTRODUCING THE ENCAPSULATING CRYSTAL AND PLASTIC ENVELOPE INTO AN ENVIRONMENT OF ELEVATED TEMPERATURE NOT TO EXCEED THE PLASTIC FLOW LIMIT OF THE ENVELOPE.
Claim 2
Dependent Claim
54 words
AN ELECTRICAL GENERATING DEVICE COMPRISING THE COMBINATION OF A PIEZOELECTRIC CRYSTAL HELD IN A STATE OF COMPRESSION BY COMPRESSIVELY STRESSED THERMOPLASTIC ENVELOPE ENCAPSULATING SAID CRYSTAL, THE SAID COMPRESSION BEING RELEASABLE UPON INTRODUCING THE ENCAPSULATING CRYSTAL AND PLASTIC ENVELOPE INTO AN ENVIRONMENT OF ELEVATED TEMPERATURE NOT TO EXCEED THE PLASTIC FLOW LIMIT OF THE ENVELOPE.
References Cited (Backward Citations)
US2985870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |