Growing community of inventors

Warsaw, IN, United States of America

Chad E Derf

Average Co-Inventor Count = 6.00

ph-index = 5

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 = 57

Chad E DerfRebecca L Chaney (5 patents)Chad E DerfCraig S Tsukayama (5 patents)Chad E DerfCarl F Livorsi (5 patents)Chad E DerfPhillip G Withee (5 patents)Chad E DerfBenjamin J Sordelet (4 patents)Chad E DerfBen Sordelet (1 patent)Chad E DerfPhillip G Withee (0 patent)Chad E DerfCarl F Livorsi (0 patent)Chad E DerfChad E Derf (5 patents)Rebecca L ChaneyRebecca L Chaney (58 patents)Craig S TsukayamaCraig S Tsukayama (50 patents)Carl F LivorsiCarl F Livorsi (41 patents)Phillip G WitheePhillip G Withee (15 patents)Benjamin J SordeletBenjamin J Sordelet (17 patents)Ben SordeletBen Sordelet (1 patent)Phillip G WitheePhillip G Withee (0 patent)Carl F LivorsiCarl F Livorsi (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Depuy (Ireland) (3 from 134 patents)

2. Depuy Ireland Unlimited Co. (2 from 335 patents)

3. Depuy (29 patents)


5 patents:

1. 10010329 - Femoral orthopaedic surgical instrument and method

2. 9480482 - Method of assembling and positioning a femoral orthopaedic surgical instrument

3. 9138238 - Method of assembling and positioning a femoral orthopaedic surgical instrument

4. 9084612 - Femoral orthopaedic surgical instruments and method of use of same

5. 9050107 - Method of surgically preparing a patient's femur

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as of
1/15/2026
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