US4363852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated phosphate glass
Assignee: Hoya Corp
•
Filing: 1979-11-19
•
Granted: 1982-12-14
•
Expires: 1999-11-19
Abstract
Abstract A phosphate glass having coated directly on the surface thereof a layer of a fluoride. The glass is particularly suitable as a laser glass.
Inventors
- 👤 Yuji Nakajima
- 👤 Tetsuro Izumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:35
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17; C03C17/00; C03C17/22; C03C17/34; C03C17/3411; C03C17/3429; C03C17/3447; C03C17/3452; C03C4/00; C03C4/0071; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/284; C03C2217/285
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
A water-soluble phosphate glass having coated directly on the surface thereof a layer of a fluoride selected from the group consisting of ThF 4 or CeF 3 .
Claim 2
Dependent Claim
28 words
A water-soluble phosphate glass having coated directly on the surface thereof a layer of a fluoride selected from the group consisting of ThF 4 or CeF 3 .
Claim 3
Dependent Claim
43 words
The water-soluble phosphate glass of claim 1, wherein a coating of one or more members selected from the group consisting of MgF 2 , SiO 2 , ZrO 2 and TiO 2 is formed on the fluoride layer as a water-resistant outermost layer.
Claim 4
Dependent Claim
47 words
A water-soluble phosphate glass having coated directly on the surface thereof a layer of MgF 2 and wherein said MgF 2 layer is coated with a layer of one or more members selected from the group consisting of SiO 2 , ZrO 2 and TiO 2 .
Claim 5
Dependent Claim
47 words
A water-soluble phosphate glass having coated directly on the surface thereof a layer of MgF 2 and wherein said MgF 2 layer is coated with a layer of one or more members selected from the group consisting of SiO 2 , ZrO 2 and TiO 2 .
Claim 6
Dependent Claim
32 words
A laser glass comprising a water-soluble phosphate glass having coated directly on the surface thereof a layer of a fluoride selected from the group consisting of ThF 4 and CeF 3 .
Claim 7
Dependent Claim
32 words
A laser glass comprising a water-soluble phosphate glass having coated directly on the surface thereof a layer of a fluoride selected from the group consisting of ThF 4 and CeF 3 .
Claim 8
Dependent Claim
42 words
The laser glass of claim 4, wherein a coating of one or more members selected from the group consisting of MgF 2 , SiO 2 , ZrO 2 and TiO 2 is formed on the fluoride layer as a water-resistant outermost layer.
Claim 9
Dependent Claim
51 words
A laser glass comprising a water-soluble phosphate glass having coated directly on the surface thereof a layer of MgF 2 and wherein said MgF 2 layer is coated with a layer of one or more members selected from the group consisting of SiO 2 , ZrO 2 and TiO 2 .
Claim 10
Dependent Claim
51 words
A laser glass comprising a water-soluble phosphate glass having coated directly on the surface thereof a layer of MgF 2 and wherein said MgF 2 layer is coated with a layer of one or more members selected from the group consisting of SiO 2 , ZrO 2 and TiO 2 .
References Cited (Backward Citations)
US3126295A
Cited
US2789062A
Cited
US2858240A
Cited
US2834689A
Cited
US3053698A
Cited
US3176574A
Cited
US3738732A
Cited
US3936579A
Cited
DE2154030A1
Cited
US3849244A
Cited
JPS4929590A
Cited
US3883214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |