For the Inventor, By the Inventor

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Madison, WI, United States of America

Rovcal, Inc.

USPTO Granted Patents = 55

% Expired Patents = 29.1

EPO Patents = 11

Trademarks = 14

Forward Citations = 548

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92 inventors (with patents filed for the assignee):

David H Roland (11 out of 18 patents)

William C Bushong (10 out of 18 patents)

Viet H Vu (9 out of 16 patents)

4. Paul Allen Schmitt (8 out of 17 patents)

5. Ernest Ndzebet (8 out of 22 patents)

6. Cory R Boudreau (6 out of 61 patents)

7. Paul Cheeseman (5 out of 7 patents)

8. John M Fritz (5 out of 9 patents)

9. David Everett (4 out of 15 patents)

10. John Wilcox (4 out of 8 patents)

11. Mario Destephen (4 out of 6 patents)

12. Karthik Ramaswami (4 out of 5 patents)

13. Erik Mortensen (4 out of 5 patents)

14. Frank Mercurio (4 out of 20 patents)

15. William J Nitz (4 out of 7 patents)

Core Competencies:

Electric Shaver

Hair Cutting Appliance

Personal Grooming

Electrochemical Cells

Alkaline Cells

Cleaning Systems

Hair Styling Apparatus

Charging Methods

Hypoallergenic Coatings

Heat Delivery System

Rotary Shaver

Performance Enhancing Additives

55 patents: Sort by Forward Citations

1. 8453333 - Electric hand-held hair cutting appliance with blade clamping device (2013-06-04),

2. 8205623 - Coatings for personal grooming apparatus containing calcium carbonate derived from mollusk shells or pearls (2012-06-26),

3. 8177918 - Cleaning system for an electric shaver (2012-05-15),

4. 8119584 - Universal aqueous cleaning solution for electric shavers (2012-02-21),

5. 8091563 - Hair styling apparatus having cloth-covered heating member (2012-01-10),

6. 8079149 - Electric hair cutting appliance with counter weight (2011-12-20),

7. 8037613 - Shaving head for rotary shaver and method of manufacturing the same (2011-10-18),

8. 8003251 - Electrochemical cell grommet having a sidewall with a nonuniform thickness (2011-08-23),

9. 7931981 - Separators for alkaline electrochemical cells (2011-04-26),

10. 7897266 - Personal grooming device having a tarnish resistant, hypoallergenic and/or antimicrobial silver alloy coating thereon (2011-03-01),

11. D632434 - Personal grooming device (2011-02-08),

12. 7859220 - Method and apparatus for charging electrochemical cells (2010-12-28),

13. D621096 - Personal grooming device (2010-08-03),

14. D620643 - Lint remover (2010-07-27),

15. D620642 - Personal grooming device (2010-07-27),

Company Overview

Rovcal, Inc., based in Madison, WI, specializes in the development and manufacturing of personal grooming devices. The company focuses on innovative technologies in electric shavers, hair cutting appliances, and hair styling apparatus. Rovcal also explores advancements in electrochemical and alkaline cells, enhancing the performance and efficiency of its grooming products. With a commitment to quality and user experience, Rovcal continues to push the boundaries of personal care technology, catering to diverse grooming needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

55 Patents

#18 in Madison, WI

#163 in Wisconsin

#6,448 in US

#12,903 in the World

Madison, WI, United States of America

Rovcal, Inc.

Forward Citations = 548

92 inventors:

David H Roland (11 out of 18 patents)

William C Bushong (10 out of 18 patents)

Viet H Vu (9 out of 16 patents)

4. Paul Allen Schmitt (8 out of 17 patents)

5. Ernest Ndzebet (8 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rovcal, Inc.. Retrieved from https://idiyas.com/company/rovcal

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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