Patent US3229222A successfully refreshed from Google Patents.
US3229222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lasers utilizing a resonator with a heat sink
Assignee: International Business Machines Corp
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Filing: 1961-11-24
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Granted: 1966-01-11
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Peter P Sorokin
- 👤 Mirek J Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A LASER COMPRISING A RESONATOR INCLUDING AN ACTIVE ELEMENT, MEANS FOR APPLYING PUMPING RADIATION TO ONLY A RELATIVELY SMALL PORTION OF SAID ACTIVE ELEMENT TO PRODUCE POPULATION INVERSION AND RESULTING STIMULATED EMISSION IN SAID RESONATOR AND MEANS FOR DERIVING COHERENT RADIATION FROM SAID RESONATOR.
Claim 2
Dependent Claim
44 words
A LASER COMPRISING A RESONATOR INCLUDING AN ACTIVE ELEMENT, MEANS FOR APPLYING PUMPING RADIATION TO ONLY A RELATIVELY SMALL PORTION OF SAID ACTIVE ELEMENT TO PRODUCE POPULATION INVERSION AND RESULTING STIMULATED EMISSION IN SAID RESONATOR AND MEANS FOR DERIVING COHERENT RADIATION FROM SAID RESONATOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |