US2990258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal growing apparatus
Assignee: Individual
•
Filing: 1958-11-12
•
Granted: 1961-06-27
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Augustine Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:39
CPC Classifications
B; B01; B01D; B01D9/00; C; C30; C30B; C30B11/00; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
CRYSTAL GROWING APPARATUS COMPRISING AN AUTOCLAVE HAVING AN OPEN-END CHAMBER THEREIN, A SILVER TUBE IN SAID CHAMBER, MEANS DIVIDING SAID TUBE INTO THREE COMMUNICATING COMPARTMENT SUITABLE FOR CONTAINING A COMPONENT OXIDE IN EACH OF TWO OF SAID COMPARTMENTS AND A SEED IN THE REMAINING COMPARTMENT, SAID TUBE AND THE PORTION OF SAID CHAMBER SURROUNDING SAID TUBE EACH BEING FILLED WITH AN AMOUNT OF LIQUID THAT WILL DEVELOP SUBSTANTIALLY EQUAL PRESSURES AT THE OPERATING TEMPERATURE, AT LEAST THE LIQUID IN SAID TUBE BEING A CRYSTAL GROWING SOLUTION.
Claim 2
Dependent Claim
86 words
CRYSTAL GROWING APPARATUS COMPRISING AN AUTOCLAVE HAVING AN OPEN-END CHAMBER THEREIN, A SILVER TUBE IN SAID CHAMBER, MEANS DIVIDING SAID TUBE INTO THREE COMMUNICATING COMPARTMENT SUITABLE FOR CONTAINING A COMPONENT OXIDE IN EACH OF TWO OF SAID COMPARTMENTS AND A SEED IN THE REMAINING COMPARTMENT, SAID TUBE AND THE PORTION OF SAID CHAMBER SURROUNDING SAID TUBE EACH BEING FILLED WITH AN AMOUNT OF LIQUID THAT WILL DEVELOP SUBSTANTIALLY EQUAL PRESSURES AT THE OPERATING TEMPERATURE, AT LEAST THE LIQUID IN SAID TUBE BEING A CRYSTAL GROWING SOLUTION.
References Cited (Backward Citations)
US2675303A
Cited
US2785058A
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 |