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For the Inventor, By the Inventor

Napa, CA, United States of America

Showertek, Inc.

Calculating rank
USPTO Granted Patents = 18

% Expired Patents = 11.1

Trademarks = 1

Forward Citations = 704

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3 inventors (with patents filed for the assignee):

goldMedal Thomas R Christianson (18 out of 18 patents)

silverMedal Douglas D Hansel (2 out of 3 patents)

bronzeMedal Jeanne L Christianson (1 out of 1 patent)


18 patents:

1. D699875 - Wearable and positionable lamp with dual light sources (2014-02-18),
2. 7914052 - Splined connector for a position-sensitive device such as a showerhead (2011-03-29),
3. D623783 - Wearable and positionable dual lamp assembly (2010-09-14),
4. D604391 - Handheld showerhead with valve (2009-11-17),
5. D571942 - Wearable and positionable dual-light (2008-06-24),
6. 7040783 - Adjustable clamp-on lamp with ball-head (2006-05-09),
7. D496483 - Clip-on lamp (2004-09-22),
8. 6648376 - Flexible sectioned arm with internal overbending-prevention sleeves (2003-11-18),
9. D459437 - Hand-held shower wand (2002-06-26),
10. D450372 - Wall-mount shower head (2001-11-14),
11. 5953157 - Non-fogging shower mirror using parallel water connection (1999-09-14),
12. 5604633 - Condensation-free shower mirror heated by hot shower stream (1997-02-18),
13. 5416635 - Portable condensation-free shower mirror (1995-05-16),
14. 5032015 - Self-supported, adjustable, condensation-free shower mirror (1991-07-16),
15. 4993821 - Self-supported, adjustable, condensation-free shower mirror (1991-02-19),
Company Overview
Showertek, Inc. is a California-based company specializing in innovative shower and bath solutions. The organization focuses on developing advanced water management technologies that enhance user experience while promoting sustainability. With a commitment to quality and design, Showertek integrates modern engineering principles into its products, catering to both residential and commercial markets. The company aims to redefine personal hygiene through its cutting-edge designs and eco-friendly practices, contributing to a more sustainable future.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#4 in Napa, CA

#4,295 in California

#17,980 in US

#34,263 in the World

Napa, CA (US)
Napa, CA, United States of America

Showertek, Inc.

Forward Citations = 704

3 inventors:

goldMedal Thomas R Christianson (18 out of 18 patents)

silverMedal Douglas D Hansel (2 out of 3 patents)

bronzeMedal Jeanne L Christianson (1 out of 1 patent)

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

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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