Patent US3229221A successfully refreshed from Google Patents.
US3229221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical masers having terminal level above ground state
Assignee: International Business Machines Corp
•
Filing: 1960-12-12
•
Granted: 1966-01-11
•
Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Peter P Sorokin
- 👤 Mirek J Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:15
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/042; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093; H01S3/14; H01S3/16; H01S3/1601; H01S3/1626
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN OPTICAL MASER DEVICE FOR PRODUCING COHERENT RADIATION COMPRISING; MEANS FORMING A RESONANT STRUCTURE FOR SAID RADIATION; A BODY DOPED WITH DIVALENT SAMARIUM DISPOSED WITHIN SAID RESONANT STRUCTURE MEANS; MEANS FOR APPLYING INPUT RADIATION TO SAID BODY FOR PRODUCING MONOCHROMATIC, COHERENT RADIATION FROM SAID BODY BY STIMULATED EMISSION IN SAID BODY OF IONIC TRANSITIONS OF SAID DIVALENT SAMARIUM FROM A FIRST ENERGY STATE TO A SECOND ENERGY STATE IN SAID BODY, BOTH OF WHICH STATES ARE ABOVE THE GROUND ENERGY STATE FOR SAID BODY; AND MEANS FOR EMITTING SAID COHERENT RADIATION FROM SAID RESONANT STRUCTURE MEANS.
Claim 2
Dependent Claim
96 words
AN OPTICAL MASER DEVICE FOR PRODUCING COHERENT RADIATION COMPRISING; MEANS FORMING A RESONANT STRUCTURE FOR SAID RADIATION; A BODY DOPED WITH DIVALENT SAMARIUM DISPOSED WITHIN SAID RESONANT STRUCTURE MEANS; MEANS FOR APPLYING INPUT RADIATION TO SAID BODY FOR PRODUCING MONOCHROMATIC, COHERENT RADIATION FROM SAID BODY BY STIMULATED EMISSION IN SAID BODY OF IONIC TRANSITIONS OF SAID DIVALENT SAMARIUM FROM A FIRST ENERGY STATE TO A SECOND ENERGY STATE IN SAID BODY, BOTH OF WHICH STATES ARE ABOVE THE GROUND ENERGY STATE FOR SAID BODY; AND MEANS FOR EMITTING SAID COHERENT RADIATION FROM SAID RESONANT STRUCTURE MEANS.
References Cited (Backward Citations)
US2929922A
Cited
US3130254A
Cited
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 |