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Denco Corporation

USPTO Granted Patents = 42

Trademarks = 6

Forward Citations = 1,151

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13 inventors (with patents filed for the assignee):

Dudley W Spencer (32 out of 46 patents)

Ivars V Ivansons (14 out of 18 patents)

John B Shaposka (13 out of 13 patents)

4. Valdis Ivansons (6 out of 6 patents)

5. Dudley W C Spencer (5 out of 9 patents)

6. Theresa M Preston (2 out of 2 patents)

7. Kazuyoshi Isaji (1 out of 39 patents)

8. Hideki Kato (1 out of 21 patents)

9. Gregory M Bak (1 out of 1 patent)

10. Robert J Beird (1 out of 1 patent)

11. David Macklin (1 out of 1 patent)

12. Esmond Grattan (1 out of 1 patent)

13. Vadlis Ivansons (1 out of 1 patent)

Core Competencies:

Ozone Infection Control

Plastic Tube Welding

Vehicle Safety Devices

Spin-Hemodialysis

Female Urinary Devices

Sterile Containment Welding

Cryogenic Plastic Containers

Medical Tubing Solutions

Ion Generator Technology

Hybrid Welding Wafer

Total Containment Processes

Thermoplastic Tube Techniques

42 patents: Sort by Forward Citations

1. 7731914 - Ozone infection control device (2010-06-08),

2. 7398813 - Device for welding plastic tubes (2008-07-15),

3. 7343235 - Safety device for a vehicle (2008-03-11),

4. 6852231 - Spin-hemodialysis assembly and method (2005-02-08),

5. 6814719 - Female urinary system (2004-11-09),

6. 6716181 - Female urinary device (2004-04-06),

7. 6637489 - Wafer for use in the selective connecting and disconnecting of plastic tubes (2003-10-28),

8. 6348049 - Surgical/medical tubing and containers for use in conveying medical solutions and the like (2002-02-19),

9. 6177652 - Sterile containment welding device with self-monitoring heater unit for plastic tubes (2001-01-23),

10. 6132833 - Wafer for use in selective connecting and disconnecting of plastic tubes (2000-10-17),

11. 6071690 - Ionomeric modified poly-ether-ester plastic container for cryogenic (2000-06-06),

12. 6020574 - Sterile containment welding device with self-monitoring heater unit for (2000-02-01),

13. 5928216 - Surgical/medical tubing and containers for use in conveying medical (1999-07-27),

14. 5919173 - Medical tubing and containers for use in conveying medical solutions and (1999-07-06),

15. 5871612 - Wafer for use in selective connecting and disconnecting of plastic tubes (1999-02-16),

Denco Corporation is a leading provider of innovative solutions for the manufacturing industry. With over 30 years of experience, Denco offers a wide range of products and services including precision machining, custom tooling, and automation solutions. Our goal is to help our customers optimize their manufacturing processes, increase productivity, and achieve cost-efficiency. Visit our website to learn more about our comprehensive solutions and how we can assist your business.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

42 Patents

#9 in Kariya

#1,868 in Japan

#15,862 in the World

Denco Corporation

Forward Citations = 1,151

13 inventors:

Dudley W Spencer (32 out of 46 patents)

Ivars V Ivansons (14 out of 18 patents)

John B Shaposka (13 out of 13 patents)

4. Valdis Ivansons (6 out of 6 patents)

5. Dudley W C Spencer (5 out of 9 patents)

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