US3088036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle counting apparatus
Assignee: US Philips Corp
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Filing: 1957-05-27
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Granted: 1963-04-30
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Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Hobbs Donald Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:22
CPC Classifications
G; G06; G06M; G06M11/00; G06M11/02; G06M11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
PARTICLE COUNTING APPARATUS COMPRISING SCANNING MEANS FOR SCANNING A PARTICLE IN SUCCESSIVE LINES, DETECTING MEANS CONNECTED TO DETECT SCANNING INTERCEPTIONS OF SAID PARTICLE, CIRCUIT MEANS CONNECTED TO SAID DETECTING MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE TIME REQUIRED TO SCAN THE AREA OF SAID PARTICLE, SAID CIRCUIT MEANS COMPRISING A SIGNAL FEEDBACK PATH INCLUDING A DELAY LINE HAVING A TRANSIT TIME SHORTER THAN A LINE SCANNING PERIOD AND MEANS TO FEED A SIGNAL THROUGH SAID FEEDBACK PATH EACH TIME SAID PARTICLE IS INTERCEPTED DURING SUCCESSIVE LINE SCANSIONS, COMPARISION MEANS CONNECTED TO COMPARE THE DURATION OF SAID SIGNAL WITH A PREDETERMINED TIME INTERVAL, AND MEANS FOR COUNTING SAID SIGNAL WHEN THE DURATION THEREOF IS GREATER THAN SAID PREDETERMINED TIME INTERVAL.
Claim 2
Dependent Claim
120 words
PARTICLE COUNTING APPARATUS COMPRISING SCANNING MEANS FOR SCANNING A PARTICLE IN SUCCESSIVE LINES, DETECTING MEANS CONNECTED TO DETECT SCANNING INTERCEPTIONS OF SAID PARTICLE, CIRCUIT MEANS CONNECTED TO SAID DETECTING MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE TIME REQUIRED TO SCAN THE AREA OF SAID PARTICLE, SAID CIRCUIT MEANS COMPRISING A SIGNAL FEEDBACK PATH INCLUDING A DELAY LINE HAVING A TRANSIT TIME SHORTER THAN A LINE SCANNING PERIOD AND MEANS TO FEED A SIGNAL THROUGH SAID FEEDBACK PATH EACH TIME SAID PARTICLE IS INTERCEPTED DURING SUCCESSIVE LINE SCANSIONS, COMPARISION MEANS CONNECTED TO COMPARE THE DURATION OF SAID SIGNAL WITH A PREDETERMINED TIME INTERVAL, AND MEANS FOR COUNTING SAID SIGNAL WHEN THE DURATION THEREOF IS GREATER THAN SAID PREDETERMINED TIME INTERVAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |