US4402364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguishing method
Assignee: Individual
•
Filing: 1981-12-17
•
Granted: 1983-09-06
•
Expires: 2001-12-17
Abstract
Abstract Class A and Class B fires are extinguished by applying to the burning material a composition consisting essentially of polymer micro-bits and water.
Inventors
- 👤 Max Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:05
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0036; A62D; A62D1/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A fire extinguishing method for Class A and Class B fires comprising applying to the burning material a composition consisting essentially of polymer micro-bits and water, said micro-bits being produced by disintegrating a polymer selected from the group of an expanded, non-brittle, thermoplastic styrene-polymer; an expanded, non-brittle, thermoplastic polyolefin, which is the polymer of an ethylenically unsaturated hydrocarbon having from 2 to 6 carbon atoms; or a flexible foamed polyurethane, to eliminate substantially all closed cells from said polymer.
Claim 2
Dependent Claim
79 words
A fire extinguishing method for Class A and Class B fires comprising applying to the burning material a composition consisting essentially of polymer micro-bits and water, said micro-bits being produced by disintegrating a polymer selected from the group of an expanded, non-brittle, thermoplastic styrene-polymer; an expanded, non-brittle, thermoplastic polyolefin, which is the polymer of an ethylenically unsaturated hydrocarbon having from 2 to 6 carbon atoms; or a flexible foamed polyurethane, to eliminate substantially all closed cells from said polymer.
Claim 3
Dependent Claim
12 words
The method according to claim 1 wherein the polymer micro-bits are polystyrene.
Claim 4
Dependent Claim
26 words
The method according to claim 1 wherein said composition is an aqueous slurry of polystyrene micro-bits having a solids content of 1% by weight, or less.
Claim 5
Dependent Claim
19 words
The method according to claim 3 wherein said slurry has a solids content of 0.01 to 0.5% by weight.
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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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |