US3222598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroencephalograph wave analyzer
Assignee: Individual
•
Filing: 1961-03-16
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Granted: 1965-12-07
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Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Patrick J Pollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/369; A61B5/372; A61B5/374; A61B5/72; A61B5/7235; A61B5/7239
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
APPARATUS FOR CONTINUOUSLY DETERMINING THE VARYING FREQUENCY OF A DESIRED COMPONENT OF A COMPLEX ELECTRICAL WAVE COMPRISING MEANS RESPONSIVE TO THE COMPLEX WAVE AND HAVING AN ELECTRICAL SIGNAL WITH A FREQUENCY OF A PRESELECTED MULTIPLE OF THE FREQUENCY OF THE DESIRED COMPONENT OF THE COMPLEX WAVE INCLUDING TUNED NETWORK MEANS TUNED TO A PRESELECTED BAND OF FREQUENCIES INCLUDING THE FREQUENCY RANGE OF THE DESIRED COMPONENT OF THE COMPLEX WAVE FOR AMPLIFYING THE AMPLITUDE OF THOSE COMPONENTS OF THE COMPLEX WAVE HAVING FREQUENCIES WITHIN SAID PRESELECTED BAND AND FOR ATTENUATING THE AMPLITUDE OF COMPONENTS OF THE COMPLEX WAVE HAVING FREQUENCIES OUTSIDE OF SAID PRESELECTED BAND AND MEANS FOR INCREASING THE FREQUENCY OF THE WAVE OUT OF SAID TUNED NETWORK MEANS BY A PRESELECTED FACTOR, AND MEANS RESPONSIVE TO SAID ELECTRICAL SIGNAL AND HAVING AN OUTPUT SIGNAL WITH AN AMPLITUDE VARYING IN ACCORDANCE WITH THE FREQUENCY OF SAID ELECTRICAL SIGNAL.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |