Patent US4135041A successfully refreshed from Google Patents.
US4135041A
Expired / Lapsed
US
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Dust reduction for electrode plates
Assignee: VARTA Batterie AG
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Filing: 1978-03-13
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Granted: 1979-01-16
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Expires: 1998-03-13
Abstract
Abstract Lead dust evolution from battery plates is reduced by applying a coating containing a silicate. Also plates so produced.
Inventors
- 👤 Margarete Jung
- 👤 Ernst Voss
- 👤 Tsvetko Chobanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:37
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/16; H01M4/20; H01M4/22; H01M4/23; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
A lead electrode plate for lead storage batteries whose surface is provided with a dust fixating coating wherein the coating includes sodium silicate as a film forming component.
Claim 2
Dependent Claim
28 words
A lead electrode plate for lead storage batteries whose surface is provided with a dust fixating coating wherein the coating includes sodium silicate as a film forming component.
Claim 3
Dependent Claim
23 words
The electrode plate of claim 1 wherein the coating contains in addition to the sodium silicate a small quantity of a thermoplastic synthetic.
Claim 4
Dependent Claim
20 words
The electrode plate of claim 2 wherein the thermoplastic synthetic material is a co-polymer of acrylic acid ester and styrol.
Claim 5
Dependent Claim
18 words
The electrode plate of claim 2 wherein the thermoplastic synthetic material is a co-polymer of butadiene and styrol.
Claim 6
Dependent Claim
15 words
The electrode plate of claim 1 wherein the coating additionally contains a pore forming substance.
Claim 7
Dependent Claim
13 words
The electrode plate of claim 5 wherein the pore forming substance is sugar.
Claim 8
Dependent Claim
14 words
The electrode plate of claim 5 wherein the pore forming substance is sodium sulfate.
Claim 9
Dependent Claim
27 words
A lead electrode plate for lead storage batteries whose surface is provided with a dust fixating coating wherein the coating includes water glass as a film-forming component.
Claim 10
Dependent Claim
27 words
A lead electrode plate for lead storage batteries whose surface is provided with a dust fixating coating wherein the coating includes water glass as a film-forming component.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |