Average Co-Inventor Count = 2.94
ph-index = 16
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Canon Kabushiki Kaisha (54 from 90,100 patents)
2. Hitachi Industrial Equipment Systems Co., Ltd. (21 from 487 patents)
3. Honda Motor Co., Ltd. (18 from 21,592 patents)
4. Ricoh Company, Ltd. (12 from 28,438 patents)
5. Hitachi, Ltd. (5 from 42,443 patents)
6. Roland Corporation (5 from 468 patents)
7. Honda Giken Kogyo Kabushiki Kaisha (4 from 10,092 patents)
8. Piolax, Inc. (3 from 307 patents)
9. Nkk Corporation (2 from 614 patents)
10. Other (1 from 832,347 patents)
11. Sony Corporation (1 from 58,122 patents)
12. Hitachi Koki Co., Ltd. (1 from 1,267 patents)
13. Clarion Co (1 from 1,057 patents)
14. Ts Tech Co., Ltd. (1 from 892 patents)
15. Tokyo Gas Company Limited (1 from 193 patents)
129 patents:
1. 12421972 - Liquid-feed-type gas compressor
2. 12385490 - Gas compressor
3. 12378964 - Gas compressor
4. 12313069 - Screw compressor
5. 12288543 - Sound source device for electronic musical instrument, musical sound generating method and electronic musical instrument system
6. 12135032 - Screw compressor having working chamber closing member to regulate suction working medium flow to a working chamber
7. 12123413 - Screw compressor having a plurality of branch paths with intersects and central axes
8. 12110889 - Screw compressor
9. 12104599 - Liquid feed type gas compressor having a liquid supply system with first and second cooling units
10. 12025129 - Liquid supply type screw compressor
11. 11994138 - Gas compressor with a plurality of air realease systems each having an air release valve and an air regulating valve
12. 11988217 - Oil feed type air compressor
13. 11982456 - Air compressor
14. 11965510 - Compressor body and compressor to supply liquid into working chambers and whose downstream portion reaches a suction bearing chamber
15. 11873817 - Liquid-feeding rotary-screw compressor