US5472535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas generant compositions containing stabilizer
Assignee: Autoliv ASP Inc
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Filing: 1995-04-06
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Granted: 1995-12-05
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Expires: 2015-04-06
Abstract
Abstract To a gas generant composition comprising a fuel component which includes a triazole compound and/or tetrazole compound with an acidic hydrogen and an oxidizer component which includes a transition metal oxide, is added a chelating agent, such as ethylenediaminetetraacetic acid (EDTA) to provide long-term stability to the gas generant composition.
Inventors
- 👤 Ivan V. Mendenhall
- 👤 Robert D. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:23
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/006; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
Gas generant compositions comprising a fuel component and an oxidizer component, said fuel component comprising a tetrazole compound having an acidic hydrogen and/or a triazole compound having an acidic hydrogen and said fuel component comprising a transition metal oxide, wherein the improvement comprises said gas generant composition containing a chelating agent at between about 0.05 and about 5 wt % relative to the total weight of said fuel component and said oxidizer component.
Claim 2
Dependent Claim
73 words
Gas generant compositions comprising a fuel component and an oxidizer component, said fuel component comprising a tetrazole compound having an acidic hydrogen and/or a triazole compound having an acidic hydrogen and said fuel component comprising a transition metal oxide, wherein the improvement comprises said gas generant composition containing a chelating agent at between about 0.05 and about 5 wt % relative to the total weight of said fuel component and said oxidizer component.
Claim 3
Dependent Claim
36 words
A gas generant composition according to claim 1 wherein said tetrazole compound and/or said triazole compound is present at at least about 10 wt % of the total of said fuel component plus said oxidizer component.
Claim 4
Dependent Claim
33 words
A gas generant composition according to claim 1 wherein said transition metal oxide is present at at least about 5 wt % of the total of said fuel component plus said oxidizer component.
Claim 5
Dependent Claim
19 words
A gas generant composition according to claim 1 wherein said chelating agent is an aminocarboxylic acid or salt thereof.
Claim 6
Dependent Claim
18 words
A gas generant composition according to claim 1 wherein said chelating agent is ethylenediaminetetraacetic acid or salt thereof.
References Cited (Backward Citations)
US3468730A
Cited
US5035757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-04 | 1999-06-05 | 1999-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-04 | 2003-06-05 | 2003-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-04 | 2007-06-05 | 2007-12-05 | $7700.00 | Window Closed / Lapsed |