For the Inventor, By the Inventor

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Warrington, United Kingdom

Joseph Crosfield & Sons, Ltd.

USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 31

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4 inventors (with patents filed for the assignee):

Derek Aldcroft (2 out of 13 patents)

James P Quinn (2 out of 5 patents)

Anthony Leonard Lovell (2 out of 2 patents)

4. Donald Barby (2 out of 5 patents)

2 patents: Sort by Forward Citations

1. 4127641 - Process for the preparation of precipitated silicas having morphology (1978-11-28),

2. 3954944 - Fine silicas (1976-05-04),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#15 in Warrington

#6,372 in United Kingdom

Warrington, United Kingdom

Joseph Crosfield & Sons, Ltd.

Forward Citations = 31

4 inventors:

Derek Aldcroft (2 out of 13 patents)

James P Quinn (2 out of 5 patents)

Anthony Leonard Lovell (2 out of 2 patents)

4. Donald Barby (2 out of 5 patents)

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