Growing community of inventors

Shropshire, United Kingdom

David Roberts

Average Co-Inventor Count = 5.00

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 = 4

David RobertsNobuyasu Makino (1 patent)David RobertsFumitoshi Murakami (1 patent)David RobertsTsutomu Kagawa (1 patent)David RobertsColin Weaver (1 patent)David RobertsDavid Roberts (1 patent)Nobuyasu MakinoNobuyasu Makino (22 patents)Fumitoshi MurakamiFumitoshi Murakami (5 patents)Tsutomu KagawaTsutomu Kagawa (1 patent)Colin WeaverColin Weaver (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (1 from 28,544 patents)

2. Ricoh UK Products Ltd. (1 from 1 patent)


1 patent:

1. 7498114 - Toner, process of manufacturing toner, developer, toner container, process cartridge, image forming apparatus, and image forming process

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12/6/2025
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