US2978341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass composition
Assignee: Imperial Glass Corp
•
Filing: 1959-04-06
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Granted: 1961-04-04
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Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Richard R Bastian
- 👤 Axel C Ottoson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:19
CPC Classifications
C; C03; C03C; C03C13/00; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
UNLEACHED GLASS FIBERS HAVING A DIAMETER LESS THAN .001 INCH WITH A "YOUNG MODULUS" OF AT LEAST 15 MILLION, CONSISTING ESSENTIALLY OF THE FOLLOWING CHEMICALS IN THE FOLLOWING PROPORTIONS:
Claim 2
Dependent Claim
29 words
UNLEACHED GLASS FIBERS HAVING A DIAMETER LESS THAN .001 INCH WITH A "YOUNG MODULUS" OF AT LEAST 15 MILLION, CONSISTING ESSENTIALLY OF THE FOLLOWING CHEMICALS IN THE FOLLOWING PROPORTIONS:
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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |