US3303115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for forming materials of high purity by fusion
Assignee: Corning Glass Works
•
Filing: 1962-05-31
•
Granted: 1967-02-07
•
Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Nitsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/04; C04B33/06; C03; C03B; C03B19/00; C03B19/01; C04B33/30; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN THE METHOD OF MANUFACTURING A SOLID BODY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA AND HAVING THEREIN IONIC IMPURITIES CAPABLE OF MIGRATION UNDER THE INFLUENCE OF AN ELECTRIC FIELD, WHICH COMPRISES THE STEPS OF PRODUCING MOLTEN PARTICLES OF SAID MATERIAL AND DEPOSITING SAID PARTICLES TO FORM A SINGLE FUSED MASS, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A DIRECT CURRENT ELECTRIC FIELD ACROSS SAID SINGLE MASS DURING THE DEPOSITION OF SAID PATICLES WHILE MAINTAINING SAID MASS AT AN ELEVATED TEMPERATURE AND THEREBY EFFECTING MOVEMENT OF SAID IONIC IMPURITIES THEREIN TOWARD A SURFACE THEREOF.
Claim 2
Dependent Claim
97 words
IN THE METHOD OF MANUFACTURING A SOLID BODY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA AND HAVING THEREIN IONIC IMPURITIES CAPABLE OF MIGRATION UNDER THE INFLUENCE OF AN ELECTRIC FIELD, WHICH COMPRISES THE STEPS OF PRODUCING MOLTEN PARTICLES OF SAID MATERIAL AND DEPOSITING SAID PARTICLES TO FORM A SINGLE FUSED MASS, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A DIRECT CURRENT ELECTRIC FIELD ACROSS SAID SINGLE MASS DURING THE DEPOSITION OF SAID PATICLES WHILE MAINTAINING SAID MASS AT AN ELEVATED TEMPERATURE AND THEREBY EFFECTING MOVEMENT OF SAID IONIC IMPURITIES THEREIN TOWARD A SURFACE THEREOF.
References Cited (Backward Citations)
US1051060A
Cited
US1710535A
Cited
US2272342A
Cited
US2793181A
Cited
US2793182A
Cited
GB795191A
Cited
US2927042A
Cited
US2897126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |