US2901428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguishing method
Assignee: CHEM FAB GRUNAN AG
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Filing: 1956-07-06
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Granted: 1959-08-25
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Schulenburg Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:45
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD OF COMBATING FIRES OF BURNING COMBUSTIBLE MATERIAL WHICH COMPRISES APPLYING TO SAID BURNING COMBUSTIBLE MATERIAL A SOLID DRY CHEMICAL FIRE EXTINGUISHING COMPOSITION COMPRISING A POWDERED SOLID CONDENSATION PRODUCT OF AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FROMALDEHYDE AND ACROLEIN AND AN AMINO COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, THIOUREA, GUANIDINE, DICYDIAMIDE AND MELAMINE IN ADMIXTURE WITH AT LEAST ONE SOLID FINELY DIVIDED FROM FORMING MATERIAL SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES BORIC ACID AND BORIC ACID SALTS THE PROPORTION OF THE CONDENSATION PRODUCT TO SAID MATERIAL BEING BETWEEN 1:1 AND 1:6.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |