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Patent US3098699A successfully refreshed from Google Patents.
US3098699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Densification of glass, germanium oxide, silica or boric acid
Assignee: Bausch and Lomb Inc
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Filing: 1961-02-03
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Granted: 1963-07-23
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Expires: 1981-02-03
Abstract
No abstract record available.
Inventors
- 👤 Roy Rustum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:19
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF DENSIFYING GERMANIUM OXIDE GLASS COMPRISING THE STEPS OF, REDUCING THE GERMANIUM OXIDE MATERIAL TO A PULVERVULENT MASS, PRESSING THE PULVERULENT MASS OF MATERIAL TO A PRESSURE WITHIN THE RANGE OF 22,000 TO 100,000 ATMOSPHERES, HEATING THE PULVERULENT MASS OF MATERIAL TO A TEMPERATURE OF APPROXIMATELY 2000C. DURING THE PRESSING STEP, AND MAINTAINING THE PRESSURE ON THE MATERIAL FOR A TIME OF A FEW SECONDS AND NOT EXCEEDING ONE MINUTE.
Claim 2
Independent Claim
72 words
THE METHOD OF DENSIFYING GERMANIUM OXIDE GLASS COMPRISING THE STEPS OF, REDUCING THE GERMANIUM OXIDE MATERIAL TO A PULVERVULENT MASS, PRESSING THE PULVERULENT MASS OF MATERIAL TO A PRESSURE WITHIN THE RANGE OF 22,000 TO 100,000 ATMOSPHERES, HEATING THE PULVERULENT MASS OF MATERIAL TO A TEMPERATURE OF APPROXIMATELY 2000C. DURING THE PRESSING STEP, AND MAINTAINING THE PRESSURE ON THE MATERIAL FOR A TIME OF A FEW SECONDS AND NOT EXCEEDING ONE MINUTE.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |