US3065091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline fibers
Assignee: Owens Corning
•
Filing: 1960-05-26
•
Granted: 1962-11-20
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Robert G Russell
- 👤 Willard L Morgan
- 👤 Lewis F Scheffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/006; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A BODY CONSISTING OF SUBSTANTIALLY PURE CRYSTALLINE FIBERS SELECTED FROM THE GROUP CONSISTING OF TITANIA, ZIRCONIA, AND ZIRCON, AS DETERMINED BY X-RAY DIFFRACTION, IN A VITREOUS MATRIX CONSISTING ESSENTIALLY OF BORIC ANHYDRIDE AND AN ALKALI METAL OXIDE HAVING AN ATOMIC NUMBER OF AT LEAST 11.
Claim 2
Dependent Claim
45 words
A BODY CONSISTING OF SUBSTANTIALLY PURE CRYSTALLINE FIBERS SELECTED FROM THE GROUP CONSISTING OF TITANIA, ZIRCONIA, AND ZIRCON, AS DETERMINED BY X-RAY DIFFRACTION, IN A VITREOUS MATRIX CONSISTING ESSENTIALLY OF BORIC ANHYDRIDE AND AN ALKALI METAL OXIDE HAVING AN ATOMIC NUMBER OF AT LEAST 11.
References Cited (Backward Citations)
US2876074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |