US3406289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser small-particle detector and method
Assignee: Iowa State University Research Foundation Inc
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Filing: 1965-11-10
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Granted: 1968-10-15
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Expires: 1985-11-10
Abstract
No abstract record available.
Inventors
- 👤 Stuart A Schleusener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:25
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AN APPARATUS FOR DETECTING PARTICLES OF SUB-SIEVE SIZE COMPRISING A CAVITY-EQUIPPED GAS LASER, MEANS COUPLED TO SAID CAVITY FOR INTRODUCING SAID PARTICLES THEREINTO AND MEANS COUPLED TO SAID LASER FOR DETECTING THE CHANGE IN LASER OUTPUT.
Claim 2
Independent Claim
36 words
AN APPARATUS FOR DETECTING PARTICLES OF SUB-SIEVE SIZE COMPRISING A CAVITY-EQUIPPED GAS LASER, MEANS COUPLED TO SAID CAVITY FOR INTRODUCING SAID PARTICLES THEREINTO AND MEANS COUPLED TO SAID LASER FOR DETECTING THE CHANGE IN LASER OUTPUT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |