Patent US2823145A successfully refreshed from Google Patents.
US2823145A
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Flameproofing with alkali metal fluoride and a member of the group consisting of boric acid and anhydride
Assignee: EIDP Inc
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Filing: 1956-03-21
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Granted: 1958-02-11
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Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Norval D Clare
- 👤 Alden J Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:09
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; D06; D06M; D06M11/00; D06M11/80; D06M11/82; D21H17/00; D21H17/71; D21H17/73; D21H5/00; D21H5/0002; B; B27; B27K; B27K2240/00; B27K2240/30; B27K3/00; B27K3/16; B27K3/32; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
AN ARTICLE OF MANUFACTURE COMPRISING AN INITIALLY INFLAMMABLE BASE RENDRED FLAMEPROOF BY TREATMENT WITH THE WATER-SOLUBLE PRODUCT OF THE REACTION BETWEEN THE FLUORIDE OF AN ALKALI METAL AND A MEMBER OF THE GROUP CONSISTING OF BORIC ACID AND ANHYDRIDE.
Claim 2
Dependent Claim
39 words
AN ARTICLE OF MANUFACTURE COMPRISING AN INITIALLY INFLAMMABLE BASE RENDRED FLAMEPROOF BY TREATMENT WITH THE WATER-SOLUBLE PRODUCT OF THE REACTION BETWEEN THE FLUORIDE OF AN ALKALI METAL AND A MEMBER OF THE GROUP CONSISTING OF BORIC ACID AND ANHYDRIDE.
References Cited (Backward Citations)
US2420644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |