US3198665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery plates and methods for their manufacture
Assignee: Exide Technologies LLC
•
Filing: 1963-12-02
•
Granted: 1965-08-03
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 William H Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/16; H01M4/20; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
THE METHOD OF INCREASING BOTH THE OXIDATION AND THE SULFATION RESISTANCE OF THE NEGATIVE PLATES OF LEAD ACID STORAGE BATTERIES BY CAUSING AT THE TIME OF FIRST FORMATION OF SAID PLATES A PETROLEUM FRACTION OF MINERAL ORIGIN TO BE DISPERSED THROUGHOUT THE CHARGED ACTIVE MATERIAL, CONSISTING ESSENTIALLY OF PARTICLES OF PURE SPONGE LEAD, TO FORM A PROTECTIVE FILM WHICH COMPRISES MIXING TOGETHER TO FORM A PASTABLE MIXTRUE FINELY DIVIDED NEGATIVE MATERIAL, COMPRISING PREDOMINANTLY LEAD OXIDE, ACID, WATER, AN EXPANDER AND SAID PETROLEUM FRACTION OF MINERAL ORIGIN HAVING A BOILING POINT ABOVE 300*C. SELECTED FROM THE GROUP CONSISTING OF THE LUBRICATING OILS, PETROLEUM JELLY AND PARAFFIN IN THE AMOUNT OF FROM 0.05% TO ABOUT 3% BY WEIGHT OF SAID FINELY DIVIDED NEGATIVE MATERIAL AND SAID EXPANDER IN THEIR DRY STATES, SAID MIXING THOROUGHLY DISPERSING SAID PETROLEUM FRACTION THORUGHOUT SAID PASTABLE MIXTURE PREPARATORY TO FORMATION OF SAID PROTECTIVE FILM, PASTING SAID MIXTURE ONTO THE GRIDS OF SAID NEGATIVE PLATES, SETTING SAID MIXTURE ON SAID GRIDS, AND CHARGING SAID NEGATIVE PLATES TO CONVERT ELECTROCHEMICALLY SAID NEGATIVE MATERIAL TO CHARGED ACTIVE MATERIAL OF SPONGE LEAD CHARACTERIZED BY HAVING THEREON SAID PROTECTIVE FILM OF SAID PETROLEUM FRACTION.
Claim 2
Independent Claim
192 words
THE METHOD OF INCREASING BOTH THE OXIDATION AND THE SULFATION RESISTANCE OF THE NEGATIVE PLATES OF LEAD ACID STORAGE BATTERIES BY CAUSING AT THE TIME OF FIRST FORMATION OF SAID PLATES A PETROLEUM FRACTION OF MINERAL ORIGIN TO BE DISPERSED THROUGHOUT THE CHARGED ACTIVE MATERIAL, CONSISTING ESSENTIALLY OF PARTICLES OF PURE SPONGE LEAD, TO FORM A PROTECTIVE FILM WHICH COMPRISES MIXING TOGETHER TO FORM A PASTABLE MIXTRUE FINELY DIVIDED NEGATIVE MATERIAL, COMPRISING PREDOMINANTLY LEAD OXIDE, ACID, WATER, AN EXPANDER AND SAID PETROLEUM FRACTION OF MINERAL ORIGIN HAVING A BOILING POINT ABOVE 300*C. SELECTED FROM THE GROUP CONSISTING OF THE LUBRICATING OILS, PETROLEUM JELLY AND PARAFFIN IN THE AMOUNT OF FROM 0.05% TO ABOUT 3% BY WEIGHT OF SAID FINELY DIVIDED NEGATIVE MATERIAL AND SAID EXPANDER IN THEIR DRY STATES, SAID MIXING THOROUGHLY DISPERSING SAID PETROLEUM FRACTION THORUGHOUT SAID PASTABLE MIXTURE PREPARATORY TO FORMATION OF SAID PROTECTIVE FILM, PASTING SAID MIXTURE ONTO THE GRIDS OF SAID NEGATIVE PLATES, SETTING SAID MIXTURE ON SAID GRIDS, AND CHARGING SAID NEGATIVE PLATES TO CONVERT ELECTROCHEMICALLY SAID NEGATIVE MATERIAL TO CHARGED ACTIVE MATERIAL OF SPONGE LEAD CHARACTERIZED BY HAVING THEREON SAID PROTECTIVE FILM OF SAID PETROLEUM FRACTION.
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |