Inventor

John G Pursell

Inventor
Mountain Brook, AL, US

Overview

3→
Patents
2004–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B22Fprimary
B22FWorking metallic powder15%
C22CAlloys15%
B23PMetal-working not otherwise provided for8%
C05BPhosphatic fertilisers8%
C05CNitrogenous fertilisers8%
C05DInorganic fertilisers not covered by subclasses c05b, c05c8%
C05FOrganic fertilisers not covered by subclasses c05b, c05c, e.g. fertilisers from waste or refuse8%
C05GMixtures of fertilisers covered individually by different subclasses of class c058%
C12NMicroorganisms or enzymes8%
F01DNon-positive displacement machines or engines, e.g. steam turbines8%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2010Patents assigned to ROLLS ROYCE PLC (2)· patent assignee history
2004Based in Derby, GB· patent location history
2010Based in Bristol, GB· patent location history
2021Patents assigned to AMVAC CHEMICAL CORP (1)· patent assignee history
2021Patents assigned to PURSELL AGRI TECH LLC (1)· patent assignee history
2021Based in Mountain Brook, AL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROLLS ROYCE PLC22004–2010
AMVAC CHEMICAL CORP12021
PURSELL AGRI TECH LLC12021
Locations
LocationPatentsSpan
Mountain Brook, AL, US12021
Bristol, GB12010
Derby, GB12004