US4367012A
Expired / Lapsed
US
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Optical glass fiber having cover glass of sodium zinc alumino borosilicate
Assignee: Nippon Sheet Glass Co Ltd
•
Filing: 1980-12-23
•
Granted: 1983-01-04
•
Expires: 2000-12-23
Abstract
Abstract This invention provides a light-transmitting glass having superior weatherability which has the following composition in % by weight: -SiO2 38-70 -B2O3 4-22 -Na2O 8-24 -K2O 0-15 -Li2O 0-15 -Cs2O 0-15 -Al2O3 1-22 -ZnO 1-16 -TiO2 0-7 -ZrO2 0-7 -CaO 0-7 -BaO 0-7 -MgO 0-7 - provided that Na2O+K2O+Li2O+Cs2O is 13 to 24, and Al2O3+ZnO+TiO2+ZrO2+CaO+BaO+MgO is 2 to 32. The aforesaid multicomponent glass exhibits superior water resistance even when used as a covering ingredient of a light-transmitting glass fiber.
Inventors
- 👤 Yoshirou Ikeda
- 👤 Yoshikazu Kaite
- 👤 Toshiro Ikuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:38
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C13/00; C03C13/04; C03C13/045; C03C13/046; C03C3/076; C03C3/089; C03C3/091; C03C3/093; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 46-70
B.sub.2 O.sub.3
6-19
Na.sub.2 O 16-24
Al.sub.2 O.sub.3
2-15, and
ZnO 3-12, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
Sb.sub.2 O.sub.3 0 - less than 1, or
As.sub.2 O.sub.3 0 - less than 1,
______________________________________ provided that Al 2 O 3 +ZnO is 5 to 20%.
Claim 2
Dependent Claim
108 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 46-70
B.sub.2 O.sub.3
6-19
Na.sub.2 O 16-24
Al.sub.2 O.sub.3
2-15, and
ZnO 3-12, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
Sb.sub.2 O.sub.3 0 - less than 1, or
As.sub.2 O.sub.3 0 - less than 1,
______________________________________ provided that Al 2 O 3 +ZnO is 5 to 20%.
Claim 3
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 60
B.sub.2 O.sub.3
10
Na.sub.2 O 20
Al.sub.2 O.sub.3
5, and
ZnO 5, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 4
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 60
B.sub.2 O.sub.3
10
Na.sub.2 O 20
Al.sub.2 O.sub.3
5, and
ZnO 5, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 5
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 45
B.sub.2 O.sub.3
17
Na.sub.2 O 15
Al.sub.2 O.sub.3
15, and
ZnO 8, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 6
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 45
B.sub.2 O.sub.3
17
Na.sub.2 O 15
Al.sub.2 O.sub.3
15, and
ZnO 8, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 7
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 42
B.sub.2 O.sub.3
16
Na.sub.2 O 14
Al.sub.2 O.sub.3
20, and
ZnO 8, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 8
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 42
B.sub.2 O.sub.3
16
Na.sub.2 O 14
Al.sub.2 O.sub.3
20, and
ZnO 8, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 9
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 45
B.sub.2 O.sub.3
17
Na.sub.2 O 15
Al.sub.2 O.sub.3
18, and
ZnO 5, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
Claim 10
Dependent Claim
90 words
A light-transmitting glass fiber having a core and a cover for the core, said cover being a multicomponent glass composition consisting of, in % by weight based on the total weight of SiO 2 , B 2 O 3 , Na 2 O, Al 2 O 3 and ZnO: ______________________________________
SiO.sub.2 45
B.sub.2 O.sub.3
17
Na.sub.2 O 15
Al.sub.2 O.sub.3
18, and
ZnO 5, and
______________________________________ in parts by weight per 100 parts by total weight of the aforesaid components: ______________________________________
As.sub.2 O.sub.3 or
Sb.sub.2 O.sub.3
less than 1.
______________________________________
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |