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Norwalk, CT, United States of America

D L Chang

Average Co-Inventor Count = 3.00

ph-index = 1

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 = 0

D L Chang ↔ A C Chan (1 patent)D L Chang ↔ Y G Pan (1 patent)D L ChangD L Chang (1 patent)A C ChanA C Chan (2 patents)Y G PanY G Pan (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Clairol Incorporated (1 from 283 patents)


1 patent:

1. 5198584 - P-phenylenediamine substituted by a quaternary ammonium group and an

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