US3341937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline injection laser device manufacture
Assignee: International Business Machines Corp
•
Filing: 1963-02-20
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Granted: 1967-09-19
•
Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick H Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H01S5/20; H01S5/22; H10; H10P; H10P54/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF MAKING ACCURATELY REPRODUCIBLE ELECTROOPTICAL DEVICE CRYSTALLINE BODIES COMPRISING THE STEPS OF: PROVIDING A CRYSTAL WAFER HAVING THE DISTANCE BETWEEN THE BROAD SURFACES THEREOF DEFINING ONE DEVICE DIMENSION, SAID BROAD SURFACES BEING ESSENTIALLY PERPENDIULAR TO A CRYSTALLOGRAPHIC PLANE OF THE PARTICULAR CRYSTAL MATERIAL OF SAID WAFER THAT REQUIRES LESS FORCE FOR SEPARATION THAN OTHER CRYSTALLOGRAPHIC PLANES OF SAID PARTICULAR CRYSTALLOGRAPHIC MATERIAL; FORMING BY TWO PARALLEL "CLEAVING" OPERATIONS A BAR OUT OF SAID WAFER; THE WIDTH DIMENSION OF SAID BAR DEFINING A SECOND DIMENSION OF THE ULTIMATE DEVICE; AND DIVIDING SAID BAR INTO INDIVIDUAL DEVICES BY SEVERING PERPENDICULAR TO THE "CLEAVED" SIDES OF SAID BAR.
Claim 2
Independent Claim
106 words
A METHOD OF MAKING ACCURATELY REPRODUCIBLE ELECTROOPTICAL DEVICE CRYSTALLINE BODIES COMPRISING THE STEPS OF: PROVIDING A CRYSTAL WAFER HAVING THE DISTANCE BETWEEN THE BROAD SURFACES THEREOF DEFINING ONE DEVICE DIMENSION, SAID BROAD SURFACES BEING ESSENTIALLY PERPENDIULAR TO A CRYSTALLOGRAPHIC PLANE OF THE PARTICULAR CRYSTAL MATERIAL OF SAID WAFER THAT REQUIRES LESS FORCE FOR SEPARATION THAN OTHER CRYSTALLOGRAPHIC PLANES OF SAID PARTICULAR CRYSTALLOGRAPHIC MATERIAL; FORMING BY TWO PARALLEL "CLEAVING" OPERATIONS A BAR OUT OF SAID WAFER; THE WIDTH DIMENSION OF SAID BAR DEFINING A SECOND DIMENSION OF THE ULTIMATE DEVICE; AND DIVIDING SAID BAR INTO INDIVIDUAL DEVICES BY SEVERING PERPENDICULAR TO THE "CLEAVED" SIDES OF SAID BAR.
References Cited (Backward Citations)
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Cited
US3152939A
Cited
US3193418A
Cited
US3128213A
Cited
US3245002A
Cited
US3247576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |