Patent US2990259A successfully refreshed from Google Patents.
US2990259A
Expired / Lapsed
US
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Syringe-type single-crystal furnace
Assignee: Individual
•
Filing: 1959-09-03
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Granted: 1961-06-27
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Paul L Moody
- 👤 Kolm Carol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:14
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/30; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/1064; Y10T117/1072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A SYRINGE-TYPE SINGLE-CRYSTAL FURNACE COMPRISING A TUBULAR HOUSING, A CRUCIBLE ADJACENT ONE END OF SAID HOUSING, MEANS FOR HEATING SAID CRUCIBLE FOR MELTING CONSTITUENTS THEREIN, A PISTON FITTED IN A SUBSTANTIALLY GAS TIGHT RELATIONSHIP WITH SAID HOUSING FOR MOVEMENT THEREIN, A SEED HOLDER SECURED TO THE END OF SAID PISTON ADJACENT SAID CRUCIBLE, AND A SHAFT AFFIXED TO THE OTHER END OF SAID PISTON FOR OPERATING SAID PISTON.
Claim 2
Dependent Claim
68 words
A SYRINGE-TYPE SINGLE-CRYSTAL FURNACE COMPRISING A TUBULAR HOUSING, A CRUCIBLE ADJACENT ONE END OF SAID HOUSING, MEANS FOR HEATING SAID CRUCIBLE FOR MELTING CONSTITUENTS THEREIN, A PISTON FITTED IN A SUBSTANTIALLY GAS TIGHT RELATIONSHIP WITH SAID HOUSING FOR MOVEMENT THEREIN, A SEED HOLDER SECURED TO THE END OF SAID PISTON ADJACENT SAID CRUCIBLE, AND A SHAFT AFFIXED TO THE OTHER END OF SAID PISTON FOR OPERATING SAID PISTON.
References Cited (Backward Citations)
US2405355A
Cited
AT193943B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |