Patent US3124623A successfully refreshed from Google Patents.
US3124623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
method of shaping crystal blanks
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
B; B24; B24B; B24B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF SHAPING A SUBSTANTIALLY FLAT AMMONIUM DIHYDROGEN PHOSPHATE CRYSTAL BLANK, WHICH IS AT LEAST SLIGHTLY SOLUBLE IN A SOLVENT, INTO A CONCAVO-CONVEX BLANK, BY THE USE OF A DIE AND A CRYSTAL SOLVENT WHICH COMPRISES SUBSTANTIALLY IMMERSING SAID BLANK IN SAID SOLVENT, APPLYING HEAT TO SAID SOLVENT, AND APPLYING PRESSURE TO SAID BLANK AFTER SAID BLANK HAS BEEN HEATED SO AS TO PRODUCE CONCAVOL-CONVEX SURFACES ON SAID BLANK.
Claim 2
Independent Claim
70 words
A METHOD OF SHAPING A SUBSTANTIALLY FLAT AMMONIUM DIHYDROGEN PHOSPHATE CRYSTAL BLANK, WHICH IS AT LEAST SLIGHTLY SOLUBLE IN A SOLVENT, INTO A CONCAVO-CONVEX BLANK, BY THE USE OF A DIE AND A CRYSTAL SOLVENT WHICH COMPRISES SUBSTANTIALLY IMMERSING SAID BLANK IN SAID SOLVENT, APPLYING HEAT TO SAID SOLVENT, AND APPLYING PRESSURE TO SAID BLANK AFTER SAID BLANK HAS BEEN HEATED SO AS TO PRODUCE CONCAVOL-CONVEX SURFACES ON SAID BLANK.
References Cited (Backward Citations)
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Cited
US2333131A
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US2330837A
Cited
US2298429A
Cited
US2408540A
Cited
US2390567A
Cited
US2446041A
Cited
US3058160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |