Growing community of inventors

Randburg, South Africa

Roy Alexander Calder

Average Co-Inventor Count = 8.00

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 = 6

Roy Alexander Calder ↔ Ferdinand Richter (1 patent)Roy Alexander Calder ↔ Anthony John Olivier (1 patent)Roy Alexander Calder ↔ Ashwin Ramduth (1 patent)Roy Alexander Calder ↔ Vernon Jeremay Adams (1 patent)Roy Alexander Calder ↔ Vinothen Moodley (1 patent)Roy Alexander Calder ↔ Charles Duckitt (1 patent)Roy Alexander Calder ↔ Mario Roza (1 patent)Roy Alexander CalderRoy Alexander Calder (1 patent)Ferdinand RichterFerdinand Richter (6 patents)Anthony John OlivierAnthony John Olivier (1 patent)Ashwin RamduthAshwin Ramduth (1 patent)Vernon Jeremay AdamsVernon Jeremay Adams (1 patent)Vinothen MoodleyVinothen Moodley (1 patent)Charles DuckittCharles Duckitt (1 patent)Mario RozaMario Roza (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sulzer Chemtech Ag (1 from 179 patents)

2. Sasol Wax (south Africa) (proprietary) Limited (1 from 1 patent)


1 patent:

1. 6855248 - Process for distilling fischer-tropsch derived paraffinic hydrocarbons

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as of
12/31/2025
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