Average Co-Inventor Count = 2.89
ph-index = 15
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. Hitachi, Ltd. (17 from 42,488 patents)
2. Dai Nippon Insatsu Kabushiki Kaisha (17 from 412 patents)
3. Elpida Memory, Inc. (8 from 1,458 patents)
4. Mitsubishi Denki Kabushiki Kaisha (5 from 21,351 patents)
5. Hitachi Device Engineering Co., Ltd. (4 from 217 patents)
6. Dai Nippon Printing Co., Ltd. (3 from 3,192 patents)
7. Texas Instruments Corporation (2 from 29,245 patents)
8. Adv Antest Corporation (2 from 2,253 patents)
9. Mitsui Toatsu Chemicals, Incorporated (2 from 1,379 patents)
10. Kawasaki Steel Corporation (2 from 1,256 patents)
11. Kao Corporation (1 from 3,601 patents)
12. Dexerials Corporation (1 from 681 patents)
13. Yoshino Kogyosho Co., Ltd. (1 from 665 patents)
14. Ps4 Luxco S.a.r.l. (1 from 377 patents)
15. Hitachi Ulsi Systems Co., Ltd. (1 from 336 patents)
54 patents:
1. 10954142 - Water cleaning agent and water cleaning method
2. 9412432 - Semiconductor storage device and system provided with same
3. 8684235 - Trigger-type liquid sprayer
4. 8422263 - Load reduced memory module and memory system including the same
5. 8004332 - Duty ratio control apparatus and duty ratio control method
6. 7839159 - ZQ calibration circuit and a semiconductor device including a ZQ calibration circuit
7. 7796456 - Semiconductor device
8. 7772931 - Oscillator and a tuning method of a loop bandwidth of a phase-locked-loop
9. 7750726 - Reference voltage generating circuit
10. 7633833 - Semiconductor memory device
11. 7609572 - Semiconductor memory device
12. 7541862 - Reference voltage generating circuit
13. RE38944 - Semiconductor memory
14. 6915476 - Redundancy semiconductor memory device with error correction code (ECC) circuits for correcting errors in recovery fuse data
15. 6906971 - Semiconductor integrated circuit device