Growing community of inventors

San Jose, CA, United States of America

Joseph Castagna

Average Co-Inventor Count = 3.46

ph-index = 2

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.

Forward Citations = 19

Joseph CastagnaRichard G Ramsdell (1 patent)Joseph CastagnaRoger Horton (1 patent)Joseph CastagnaChristopher Nguyen (1 patent)Joseph CastagnaJaved Hussain (1 patent)Joseph CastagnaJames Munninghoff (1 patent)Joseph CastagnaIhioma U Nzeadibe (1 patent)Joseph CastagnaLi Yuan (1 patent)Joseph CastagnaSteven Viskochil (1 patent)Joseph CastagnaJoseph Castagna (3 patents)Richard G RamsdellRichard G Ramsdell (8 patents)Roger HortonRoger Horton (2 patents)Christopher NguyenChristopher Nguyen (2 patents)Javed HussainJaved Hussain (1 patent)James MunninghoffJames Munninghoff (1 patent)Ihioma U NzeadibeIhioma U Nzeadibe (1 patent)Li YuanLi Yuan (1 patent)Steven ViskochilSteven Viskochil (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Industrial Co., Ltd. (1 from 27,375 patents)

2. Maxtor Corporation (1 from 719 patents)

3. S3c, Inc. (1 from 8 patents)


3 patents:

1. 8806925 - Mechanical packaging technique of attaching MEMS and flex circuit

2. 6989970 - Rotary actuator assembly for a rotatable media data storage device

3. 6600625 - Disk drive with fluid deflector for reducing fluid turbulence near transducer assembly

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as of
1/18/2026
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