Growing community of inventors

Lansdale, PA, United States of America

Keith M Witherup

Average Co-Inventor Count = 6.86

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 = 22

Keith M Witherup ↔ Joseph P Vacca (1 patent)Keith M Witherup ↔ Craig Alan Coburn (1 patent)Keith M Witherup ↔ William C Lumma, Jr (1 patent)Keith M Witherup ↔ Thomas Joseph Tucker (1 patent)Keith M Witherup ↔ Stephen F Brady (1 patent)Keith M Witherup ↔ Jules A Shafer (1 patent)Keith M Witherup ↔ Steven M Pitzenberger (1 patent)Keith M Witherup ↔ Sandor L Varga (1 patent)Keith M Witherup ↔ Richard W Ransom (1 patent)Keith M Witherup ↔ Victor J Lotti (1 patent)Keith M Witherup ↔ William J Lumma (1 patent)Keith M Witherup ↔ Willie L Whitter (1 patent)Keith M WitherupKeith M Witherup (2 patents)Joseph P VaccaJoseph P Vacca (109 patents)Craig Alan CoburnCraig Alan Coburn (58 patents)William C Lumma, JrWilliam C Lumma, Jr (51 patents)Thomas Joseph TuckerThomas Joseph Tucker (35 patents)Stephen F BradyStephen F Brady (24 patents)Jules A ShaferJules A Shafer (17 patents)Steven M PitzenbergerSteven M Pitzenberger (12 patents)Sandor L VargaSandor L Varga (9 patents)Richard W RansomRichard W Ransom (8 patents)Victor J LottiVictor J Lotti (6 patents)William J LummaWilliam J Lumma (1 patent)Willie L WhitterWillie L Whitter (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Merck + Co., Inc. (2 from 4,770 patents)


2 patents:

1. 5798377 - Thrombin inhibitors

2. 5288725 - Pyrroloquinoline Bradykinin antagonist

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as of
12/26/2025
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