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Marc L. Syvertsen
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Madison, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Zinc-air electrochemical cells with carbon dioxide scavengers
Patent number
12,107,280
Issue date
Oct 1, 2024
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Rechargeable hearing aid battery with slotted grommet
Patent number
11,949,060
Issue date
Apr 2, 2024
ENERGIZER BRANDS, LLC
Benjamin Sabrowsky
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal-air cells with minimal air access
Patent number
11,848,435
Issue date
Dec 19, 2023
ENERGIZER BRANDS, LLC
Tony Rubsam
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal-air cells with minimal air access
Patent number
11,575,168
Issue date
Feb 7, 2023
ENERGIZER BRANDS, LLC
Tony Rubsam
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal-air cells with minimal air access
Patent number
11,502,356
Issue date
Nov 15, 2022
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal-air cells with minimal air access
Patent number
11,031,644
Issue date
Jun 8, 2021
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Zinc-air battery surfactants
Patent number
10,320,041
Issue date
Jun 11, 2019
ENERGIZER BRANDS, LLC
Abhishek Guha
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Electrochemical cell grommet having a sidewall with a nonuniform th...
Patent number
8,003,251
Issue date
Aug 23, 2011
Rovcal, Inc.
Marc L. Syvertsen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrochemical cell having improved radial seal
Patent number
7,651,814
Issue date
Jan 26, 2010
Rovcal, Inc.
Thomas P. Anderson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method and apparatus for regulating charging of electrochemical cells
Patent number
7,288,920
Issue date
Oct 30, 2007
Spectrum Brands, Inc. ( FKA Rayovac Corporation)
William C. Bushong
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Method and apparatus for regulating charging of electrochemical cells
Patent number
6,878,481
Issue date
Apr 12, 2005
Rayovac Corporation
William H. Bushong
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Air manager for metal-air cells
Patent number
6,794,074
Issue date
Sep 21, 2004
Rayovac Corporation
Viet H. Vu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Patents Applications
last 30 patents
Information
Patent Application
SOLID STATE ADDITIVES FOR IRON NEGATIVE ELECTRODES
Publication number
20240243246
Publication date
Jul 18, 2024
FORM ENERGY, INC.
David Hooke
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SOLID STATE ADDITIVES FOR IRON NEGATIVE ELECTRODES
Publication number
20240063398
Publication date
Feb 22, 2024
FORM ENERGY, INC.
David HOOKE
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METAL-AIR CELLS WITH MINIMAL AIR ACCESS
Publication number
20230155212
Publication date
May 18, 2023
ENERGIZER BRANDS, LLC
Tony Rubsam
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METAL-AIR CELLS WITH MINIMAL AIR ACCESS
Publication number
20230006286
Publication date
Jan 5, 2023
ENERGIZER BRANDS, LLC
Tony Rubsam
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METAL-AIR CELLS WITH MINIMAL AIR ACCESS
Publication number
20210280931
Publication date
Sep 9, 2021
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METAL-AIR CELLS WITH MINIMAL AIR ACCESS
Publication number
20200212527
Publication date
Jul 2, 2020
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ZINC-AIR ELECTROCHEMICAL CELLS WITH CARBON DIOXIDE SCAVENGERS
Publication number
20200194738
Publication date
Jun 18, 2020
ENERGIZER BRANDS, LLC
Ian Pozdol
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RECHARGEABLE HEARING AID BATTERY WITH SLOTTED GROMMET
Publication number
20200083497
Publication date
Mar 12, 2020
ENERGIZER BRANDS, LLC
Benjamin Sabrowsky
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ZINC-AIR BATTERY SURFACTANTS
Publication number
20170237134
Publication date
Aug 17, 2017
Abhishek GUHA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electrochemical Cell Grommet Having A Sidewall With A Nonuniform Th...
Publication number
20080138705
Publication date
Jun 12, 2008
SPECTRUM BRANDS, INC.
Marc L. Syvertsen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method and apparatus for regulating charging of electrochemical cells
Publication number
20050191542
Publication date
Sep 1, 2005
Rayovac Corporation
William H. Bushong
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Electrochemical cell having improved radial seal
Publication number
20050064283
Publication date
Mar 24, 2005
Thomas P. Anderson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Independent seal and vent for an electrochemical cell
Publication number
20020127470
Publication date
Sep 12, 2002
Marc L. Syvertsen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method and apparatus for regulating charging of electrochemical cells
Publication number
20020119364
Publication date
Aug 29, 2002
William H. Bushong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Air manager for metal-air cells
Publication number
20020061427
Publication date
May 23, 2002
Viet H. Vu
H01 - BASIC ELECTRIC ELEMENTS