For the Inventor, By the Inventor

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Madison, WI, United States of America

Rayovac Corporation

USPTO Granted Patents = 185

% Expired Patents = 2.2

EPO Patents = 3

Trademarks = 12

Forward Citations = 2,907

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171 inventors (with patents filed for the assignee):

John Edward Oltman (34 out of 40 patents)

Robert B Dopp (33 out of 43 patents)

Joseph Lynn Passaniti (22 out of 23 patents)

4. Gerald A Albright (14 out of 15 patents)

5. Tor H Petterson (14 out of 59 patents)

6. El-Sayed A Megahed (13 out of 14 patents)

7. John David Burns (12 out of 12 patents)

8. Robert C Gaffney (11 out of 13 patents)

9. Ronald J Ekern (11 out of 11 patents)

10. David R Schaller (11 out of 11 patents)

11. Gregory Scott Moy (9 out of 10 patents)

12. Ashok V Joshi (9 out of 9 patents)

13. Janna L Rose (8 out of 12 patents)

14. Ross Mack (7 out of 11 patents)

15. Ron G Hellenbrand (7 out of 8 patents)

Core Competencies:

Alkaline Cell

Electrochemical Cells

Battery Package

Metal-Air Cathode

Additives

High Discharge Rate

Button Cell

Conductive Additive

Flashlight

Manganese Oxide

Separator

Gelling Agent

185 patents: Sort by Forward Citations

1. 7226696 - Alkaline cell with performance enhancing additives (2007-06-05),

2. 7005213 - Ionically conductive additive for zinc-based anode in alkaline electrochemical cells (2006-02-28),

3. 6927000 - Oxazoline surfactant anode additive for alkaline electrochemical cells (2005-08-09),

4. 6878481 - Method and apparatus for regulating charging of electrochemical cells (2005-04-12),

5. D501137 - Battery package (2005-01-25),

6. 6794074 - Air manager for metal-air cells (2004-09-21),

7. 6780347 - Manganese oxide based electrode for alkaline electrochemical system and method of its production (2004-08-24),

8. 6659281 - Button cell battery pack (2003-12-09),

9. 6653016 - Extended temperature operating range electrochemical cells (2003-11-25),

10. 6569563 - Air depolarized electrochemical button cell (2003-05-27),

11. D472006 - Flashlight (2003-03-19),

12. D467022 - LED flashlight (2002-12-11),

13. 6478158 - Battery package with multiple support compartments (2002-11-12),

14. 6461761 - Air depolarized electrochemical cells (2002-10-08),

15. 6436571 - Bottom seals in air depolarized electrochemical cells (2002-08-20),

Company Overview

Rayovac Corporation, headquartered in Madison, WI, specializes in the development and manufacturing of alkaline electrochemical cells. The company focuses on innovative battery technologies, including alkaline cells, button cells, and metal-air cathodes. Rayovac is dedicated to enhancing battery performance through advanced additives and high discharge rate solutions, catering to a variety of consumer and industrial applications. Its commitment to research in electrochemical systems positions it as a key player in the battery industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

185 Patents

#3 in Madison, WI

#43 in Wisconsin

#2,204 in US

#4,528 in the World

Madison, WI, United States of America

Rayovac Corporation

Forward Citations = 2,907

171 inventors:

John Edward Oltman (34 out of 40 patents)

Robert B Dopp (33 out of 43 patents)

Joseph Lynn Passaniti (22 out of 23 patents)

4. Gerald A Albright (14 out of 15 patents)

5. Tor H Petterson (14 out of 59 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rayovac Corporation. Retrieved from https://idiyas.com/company/rayovac

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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