US3900306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic crystalline glass fibers and method
Assignee: Vibrantz Corp
•
Filing: 1974-12-23
•
Granted: 1975-08-19
•
Expires: 1994-12-23
Abstract
Abstract Catalytic, oxidation-inducing glass fibers and a process for forming them are disclosed in which the glass of the fibers is substantially crystalline and contains from about 10% to about 70% by weight of an oxide selected from the group consisting of an oxidation-inducing oxide of cobalt, manganese, copper, chromium, and mixtures thereof. The crystalline glass fibers are prepared by fiberizing a glass composition containing at least one of the metal oxides to form amorphous glass fibers; and then heat-treating the resulting glass fibers at an elevated oxidation temperature but below the liquidus temperature of the glass of the fibers to crystallize at least part of the amorphous glass.
Inventors
- 👤 Walter H Brueggemann
- 👤 Jack S Gilhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:16
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/063; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J23/00; B01J23/16; B01J23/24; B01J23/32; B01J23/34; B01J23/70; B01J35/00; B01J35/50; B01J35/58; C; C03; C03C; C03C10/00; C03C13/00; C03C13/006; C03C3/00; C03C3/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
A PROCESS FOR FORMING CATALYTIC, OXIDATION-INDUCING CRYSTALLINE GLASS FIBERS COMPRISING: A. FIBERIZING A MOLTEN GLASS COMPOSITION CONTAINING FROM ABOUT 10 TO ABOUT 70% BY WEIGHT OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF AN OXIDATION-INDUCING OXIDE OF COBALT, MANGANESE, COPPER, CHROMIUM, AND MIXTURES THEREOF TO FORM AMORPHOUS GLASS FIBERS CONTAINING SAID OXIDE SUBSTANTIALLY THROUGHOUT THE FIBERS, AND B. HEAT TREATING THE RESULTING GLASS FIBERS WITHIN A TEMPERATURE RANGE OF ABOUT 1,000*F TO ABOUT 1,600*F FOR A SUFFICIENT TIME AND UP TO ABOUT 60 MNUTES TO CRYSTALLIZE A SUBSTANTIAL PORTION OF THE GLASS OF SAID FIBERS, IN WHCH SAID OXIDATION-INDUCING OXIDE BECOMES A PART OF THE CRYSTALLINE TRUCTURE ND SUPPLIES SITES CAPABLE OF CATALYZING OXIDATION REACTIONS.
Claim 2
Dependent Claim
116 words
A PROCESS FOR FORMING CATALYTIC, OXIDATION-INDUCING CRYSTALLINE GLASS FIBERS COMPRISING: A. FIBERIZING A MOLTEN GLASS COMPOSITION CONTAINING FROM ABOUT 10 TO ABOUT 70% BY WEIGHT OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF AN OXIDATION-INDUCING OXIDE OF COBALT, MANGANESE, COPPER, CHROMIUM, AND MIXTURES THEREOF TO FORM AMORPHOUS GLASS FIBERS CONTAINING SAID OXIDE SUBSTANTIALLY THROUGHOUT THE FIBERS, AND B. HEAT TREATING THE RESULTING GLASS FIBERS WITHIN A TEMPERATURE RANGE OF ABOUT 1,000*F TO ABOUT 1,600*F FOR A SUFFICIENT TIME AND UP TO ABOUT 60 MNUTES TO CRYSTALLIZE A SUBSTANTIAL PORTION OF THE GLASS OF SAID FIBERS, IN WHCH SAID OXIDATION-INDUCING OXIDE BECOMES A PART OF THE CRYSTALLINE TRUCTURE ND SUPPLIES SITES CAPABLE OF CATALYZING OXIDATION REACTIONS.
Claim 3
Dependent Claim
22 words
The process of claim 1 in which said oxide is present in an amount from about 15 to about 55% by weight.
Claim 4
Dependent Claim
12 words
The process of claim 1 in which said oxide is manganese oxide.
Claim 5
Dependent Claim
12 words
The process of claim 1 in which said oxide is copper oxide.
Claim 6
Dependent Claim
12 words
The process of claim 1 in which said oxide is cobalt oXide.
Claim 7
Dependent Claim
12 words
The process of claim 1 in which said oxide is chromium oxide.
Claim 8
Dependent Claim
35 words
The process of claim 1 in which said oxide is a mixture of chromium oxide and at least 5% by weight of the glass composition of an oxide of manganese, copper, cobalt, or mixtures thereof.
Claim 9
Dependent Claim
24 words
The process of claim 1 in which said time in step b is within the range of about 10 minutes to about 60 minutes.
References Cited (Backward Citations)
US2920971A
Cited
US3189563A
Cited
US3442822A
Cited
US3385915A
Cited
US3562184A
Cited
US3639113A
Cited
US3843561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |