% Expired Patents = 100.0

EPO Patents = 2

Trademarks = 3

Forward Citations = 6

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6 inventors (with patents filed for the assignee):

Jae Jun Lee (3 out of 48 patents)

Jacob Harel (2 out of 16 patents)

Ari Birger (1 out of 8 patents)

4. Yao Ding (1 out of 40 patents)

5. Philip Austin Weaver (1 out of 2 patents)

6. Do Young Ko (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 9836137 - Ultrasonic wave receiver and position information input apparatus comprising same (2017-12-05),

2. 9471183 - Mobile device incorporating projector and pen-location transcription system (2016-10-18),

3. 9342163 - Position measuring device and position information input system using same (2016-05-17),

4. 9304611 - Directional ultrasound transmitting stylus (2016-04-05),

5. 9285899 - Data entry device utilizing writing implement rotation (2016-03-15),

6. 9274623 - Position information input system (2016-03-01),

7. 8400877 - Method and apparatus for measuring position of the object using microphone (2013-03-19),

PNF Co., Ltd is a leading global provider of innovative solutions in the field of technology and manufacturing. With a focus on quality and efficiency, PNF Co., Ltd offers a wide range of products and services to meet the needs of customers worldwide. The company is committed to driving growth through continuous innovation and collaboration with industry partners.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#73 in Seongnam

#1,433 in South Korea

Seongnam, South Korea

Pnf Co., Ltd