US3012374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for growing crystals
Assignee: NL Industries Inc
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Filing: 1957-10-15
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Granted: 1961-12-12
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Expires: 1977-10-15
Abstract
No abstract record available.
Inventors
- 👤 Merker Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:43
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; A; A01; A01B; A01B13/00; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR PRODUCING A SUBSTANTIALLY STRAIN-FREE MONOCRYSTALLINE MASS BY FLAME FUSION COMPRISING THE STEPS OF: FEEDING A POWDERED FEED MATERIAL TO A BURNER FLAME, FUSING SAID FEED MATERIAL IN SAID BURNER FLAME TO FORM A MONOCRYSTALLINE MASS, ADDING SUPPLEMENTARY HEAT TO ALL PORTIONS OF SAID MONOCRYSTALLINE MASS SIMULTANEOUSLY PRIOR TO SHUTTING OFF SAID BURNER FLAME TO MAINTAIN THE TEMPERATURE OF SAID MASS SUBSTANTIALLY UNCHANGED UPON SHUTTING OFF SAID BURNER FLAME AND TO DISTRIBUTE HEAT UNIFORMALLY THROUGHOUT SAID MASS PRIOR TO SHUTTING OFF SAID BURNER FLAME, AND THEN SHUTTING OFF SAID BURNER FLAME
Claim 2
Independent Claim
93 words
A METHOD FOR PRODUCING A SUBSTANTIALLY STRAIN-FREE MONOCRYSTALLINE MASS BY FLAME FUSION COMPRISING THE STEPS OF: FEEDING A POWDERED FEED MATERIAL TO A BURNER FLAME, FUSING SAID FEED MATERIAL IN SAID BURNER FLAME TO FORM A MONOCRYSTALLINE MASS, ADDING SUPPLEMENTARY HEAT TO ALL PORTIONS OF SAID MONOCRYSTALLINE MASS SIMULTANEOUSLY PRIOR TO SHUTTING OFF SAID BURNER FLAME TO MAINTAIN THE TEMPERATURE OF SAID MASS SUBSTANTIALLY UNCHANGED UPON SHUTTING OFF SAID BURNER FLAME AND TO DISTRIBUTE HEAT UNIFORMALLY THROUGHOUT SAID MASS PRIOR TO SHUTTING OFF SAID BURNER FLAME, AND THEN SHUTTING OFF SAID BURNER FLAME
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |