Growing community of inventors

Sayre, PA, United States of America

Constantine D Markellos

Average Co-Inventor Count = 2.00

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 = 1

Constantine D MarkellosDavid B Hedden (1 patent)Constantine D MarkellosConstantine D Markellos (1 patent)David B HeddenDavid B Hedden (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. E.i. Dupont De Nemours and Company (1 from 16,338 patents)


1 patent:

1. 5154360 - Process of making X-ray phosphors having improved efficiency

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1/13/2026
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