Patent US3328181A successfully refreshed from Google Patents.
US3328181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metaphosphate glass
Assignee: Bausch and Lomb Inc
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Filing: 1963-03-28
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Granted: 1967-06-27
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Weidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:31
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/21; C03C3/19; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/902; Y10S501/903
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY OF 41-50 WEIGHT PERCENT ALUMINUM METAPHOSPHATE, 20-25 WEIGHT PERCENT ALKALI METAL METAPHOSPHATE, 18-25 WEIGHT PERCENT ALKALINE EARTH METAPHOSPHATE AND 2-17% WEIGHT PERCENT B2O3.
Claim 2
Dependent Claim
28 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY OF 41-50 WEIGHT PERCENT ALUMINUM METAPHOSPHATE, 20-25 WEIGHT PERCENT ALKALI METAL METAPHOSPHATE, 18-25 WEIGHT PERCENT ALKALINE EARTH METAPHOSPHATE AND 2-17% WEIGHT PERCENT B2O3.
Claim 3
Dependent Claim
40 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY OF 33-41 WEIGHT PERCENT ALUMINUM METAPHOSPHATE, 16-21 WEIGHT PERCENT POTASSIUM METAPHOSPHATE, 0-16.3 WEIGHT PERCENT B2O3 AND 2.4-20.6 WEIGHT PERCENT TITANIUM DIOXIDE WHEREIN THE TOTAL WEIGHT PERCENT RANGE OF B2O3 AND TITANIUM DIOXIDE IS BETWEEN 2.4-34.
Claim 4
Dependent Claim
40 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY OF 33-41 WEIGHT PERCENT ALUMINUM METAPHOSPHATE, 16-21 WEIGHT PERCENT POTASSIUM METAPHOSPHATE, 0-16.3 WEIGHT PERCENT B2O3 AND 2.4-20.6 WEIGHT PERCENT TITANIUM DIOXIDE WHEREIN THE TOTAL WEIGHT PERCENT RANGE OF B2O3 AND TITANIUM DIOXIDE IS BETWEEN 2.4-34.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |