US3004878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fibrous glass building boards and product
Assignee: Owens Corning
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Filing: 1957-08-16
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Granted: 1961-10-17
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Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 James A Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:02
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72; B; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29C; B29C67/00; B29C67/24; B29C67/248; B29C67/249; D04H1/40; D04H1/54; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A METHOD OF PRODUCING A FIBROUS BUILDING BOARD WHICH COMPRISES CREATING A WEB OF GLASS FIBERS IMPREGNATED WITH AN UNCURED BINDER, TEARING THE WEB INTO CLUMPS AND LETTING THE CLUMPS FALL UPON A COLLECTING SURFACE, INTERSPERSING COARSE, WET WOOD FIBERS AMONG THE CLUMPS OF THE WEB AS THEY FALL UPON THE COLLECTING SURFACE, SAID WET
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |