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For the Inventor, By the Inventor

Dover, DE, United States of America

Chemtron Research LLC


USPTO Granted Patents = 42

% Expired Patents = 26.2


Forward Citations = 63

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38 inventors (with patents filed for the assignee):

goldMedal Anatoly Shteynberg (8 out of 70 patents)

silverMedal James V Brady, Jr (5 out of 14 patents)

bronzeMedal Dana M Sohr (5 out of 7 patents)

4.  Harry Leonard Perper (5 out of 9 patents)

5.  James Randall Beckers (5 out of 14 patents)

6.  Eric C Anderson (5 out of 170 patents)

7.  Harry Rodriguez (4 out of 68 patents)

8.  Sinan Doluca (4 out of 11 patents)

9.  Stephen F Dreyer (4 out of 11 patents)

10.  Robert Paul Morris (4 out of 191 patents)

11.  Dongsheng Zhou (4 out of 37 patents)

12.  Harlan Ohara (4 out of 9 patents)

13.  Lester Frank Ludwig (4 out of 215 patents)

14.  Brett B Stewart (3 out of 82 patents)

15.  Lynn Erich Petersen (2 out of 7 patents)


Core Competencies:
Power Saving Design
Battery Chargers
User Interface Device
Touch Sensor
Solid State Lighting
AC Line Power
Location Information
Image Categorization
Routing Servers
Cascaded Power Conversion
Consumer-Selected Advertising
Heat Dissipating Apparatus

42 patents:

1. 12416953 - Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal (2025-09-16),
2. 12165220 - Social networking system which provides location information of related users (2024-12-10),
3. 12019488 - Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal (2024-06-25),
4. 11809643 - Methods and systems for controlling applications using user interface device with touch sensor (2023-11-07),
5. 11797107 - Method and user interface device with touch sensor for controlling applications (2023-10-24),
6. 11579674 - Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal (2023-02-14),
7. 11314340 - User interface device with touch sensor (2022-04-26),
8. 11290845 - System and method for providing information matching a user's stated preferences (2022-03-29),
9. 11114851 - Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal (2021-09-07),
10. 10959046 - System and method for providing information matching a user's stated preferences (2021-03-23),
11. 10949931 - Social networking system which provides location information of related users (2021-03-16),
12. 10616966 - Apparatus, method and system for providing AC line power to lighting devices (2020-04-07),
13. 10462349 - Method and system for hosting entity-specific photo-sharing web sites for entity-specific digital cameras (2019-10-29),
14. 10362446 - System and method for providing information matching a user's stated preferences (2019-07-23),
15. 10231301 - Apparatus, method and system for providing AC line power to lighting devices (2019-03-12),
Chemtron Research LLC, based in Dover, DE, specializes in innovative solutions across various technology domains, including energy conservation and power conversion. The company focuses on developing advanced battery chargers and solid-state lighting systems, enhancing efficiency and sustainability in energy usage. Additionally, Chemtron is involved in user interface devices and touch sensor technologies, contributing to the evolution of interactive systems. Their expertise extends to image categorization and social networking, positioning them at the intersection of technology and user experience.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

42 Patents

#7 in Dover, DE

#142 in Delaware

#8,253 in US

#16,338 in the World

Dover, DE (US)
Dover, DE, United States of America

Chemtron Research LLC

Forward Citations = 63

38 inventors:

goldMedal Anatoly Shteynberg (8 out of 70 patents)

silverMedal James V Brady, Jr (5 out of 14 patents)

bronzeMedal Dana M Sohr (5 out of 7 patents)

4.  Harry Leonard Perper (5 out of 9 patents)

5.  James Randall Beckers (5 out of 14 patents)

Please report any incorrect information to [email protected]
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