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 47 patents)

Jacob Harel (2 out of 16 patents)

Ari Birger (1 out of 8 patents)

4. Yao Ding (1 out of 39 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.

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USPTO Data Jan 1 1976 - Jan 6 2026

7 Patents

#7 in Seongnam-si, Gyeonggi-Do

#1,368 in South Korea

Seongnam-si, Gyeonggi-Do, South Korea

Pnf Co., Ltd