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For the Inventor, By the Inventor

Eindhoven, Netherlands

Leonard Woldring

This inventor holds 5 USPTO granted patents. Top assignee: U.S. Philips Corporation. Active years: 1976-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Leonard Woldring. Retrieved from https://idiyas.com/inventor/leonard-woldring

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 3

Forward Citations = 50(Granted Patents)


Location History:

  • Emmasingel, NL (1977)
  • Eindhoven, NL (1976 - 1984)

Company Filing History:

goldMedal5 out of 14,087 
 
U.S. Philips Corporation
 patents

Years Active: 1976-1984

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5 patents (USPTO):Explore Patents
1. 4443739 - Electric device comprising at least one low-pressure mercury vapor (1984-04-17),
2. 4353007 - Discharge lamp unit including integral ballast (1982-10-05),
3. 4020439 - Inductive stabilizing ballast for a gas and/or vapor discharge lamp (1977-04-26),
4. 4017761 - Electric device for starting and supplying a gas-and/or vapor discharge (1977-04-12),
5. 3947955 - Method of making an inductive stabilizing ballast for a gas and/or (1976-04-06),

Title: Leonard Woldring: Innovator in Electric Devices

Introduction

Leonard Woldring is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of electric devices, holding a total of 5 patents. His work focuses on improving the efficiency and functionality of electric discharge systems.

Latest Patents

Woldring's latest patents include innovative designs that enhance the performance of electric devices. One of his notable inventions is an electric device comprising at least one low-pressure mercury vapor discharge tube. This device is designed to connect to an AC voltage source at a frequency of 50 to 60 Hz. It produces a comparatively large current distortion while maintaining a low required reignition voltage, resulting in relatively small electric losses. Additionally, the discharge tube remains operational even with minor deviations from the nominal AC supply voltage.

Another significant patent is for a discharge lamp unit that includes an integral ballast. This lamp unit features a mercury vapor discharge tube and a stabilization ballast that forms a single mechanical unit. The design incorporates a lamp base typical for incandescent lamps, and the discharge tube has a relatively high arc voltage. This innovation leads to a compact ballast portion, enhancing the overall efficiency of the lamp unit.

Career Highlights

Leonard Woldring is associated with U.S. Philips Corporation, a leading company in the field of electronics and electrical engineering. His work at Philips has allowed him to develop and patent groundbreaking technologies that contribute to the advancement of electric devices.

Collaborations

Woldring has collaborated with several talented individuals in his field, including Alexander Joseph Thiessens and Jozef C Moerkens. These collaborations have fostered innovation and have led to the successful development of various electric device technologies.

Conclusion

Leonard Woldring's contributions to electric device technology are noteworthy, with a focus on efficiency and performance. His patents reflect a commitment to innovation in the field, making him a significant figure in the industry.

Profile summary based on public USPTO records.
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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