Patent US2387952A successfully refreshed from Google Patents.
US3431484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Second harmonic generator
Assignee: AT&T Inc
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Filing: 1965-09-22
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Granted: 1969-03-04
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Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Yoh-Han Pao
- 👤 Peter M Rentzepis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:59
CPC Classifications
H; H03; H03B; H03B19/00; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SECOND HARMONIC GENERATOR COMPRISING, A COMBINATION, A LASER SOURCE OF COHERENT LIGHT RADIATION AT A FIXED FUNDAMENTAL FREQUENCY, AND AN ORGANIC MOLECULAR CRYSTAL WHICH DOES NOT POSSES A CENTER OF INVERSION AND WHICH EXHIBITS AN ABSORPTION OF AT LEAST 10 PERCENT AT THE FREQUENCY OF THE SECOND HARMONIC OF THE LASER RADIATION, MEANS FOR DIRECTING THE OUTPUT RADIATION OF THE LASER ONTO THE ORGANIC MOLECULAR CRYSTAL AND OUTPUT MEANS FOR UTILIZING THE SECOND HARMONIC FREQUENCY.
Claim 2
Dependent Claim
76 words
A SECOND HARMONIC GENERATOR COMPRISING, A COMBINATION, A LASER SOURCE OF COHERENT LIGHT RADIATION AT A FIXED FUNDAMENTAL FREQUENCY, AND AN ORGANIC MOLECULAR CRYSTAL WHICH DOES NOT POSSES A CENTER OF INVERSION AND WHICH EXHIBITS AN ABSORPTION OF AT LEAST 10 PERCENT AT THE FREQUENCY OF THE SECOND HARMONIC OF THE LASER RADIATION, MEANS FOR DIRECTING THE OUTPUT RADIATION OF THE LASER ONTO THE ORGANIC MOLECULAR CRYSTAL AND OUTPUT MEANS FOR UTILIZING THE SECOND HARMONIC FREQUENCY.
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |