Inventor

Douglas Barr

Inventor
Decatur, GA, US

Overview

13→
Patents
1977–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 13 as inventor

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

C05Cprimary
C05CNitrogenous fertilisers13%
C05GMixtures of fertilisers covered individually by different subclasses of class c0513%
Y02PClimate change mitigation technologies in the production or processing of goods13%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium10%
C10MLubricating compositions10%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions10%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
A01KAnimal husbandry3%
A01MCatching, trapping or scaring of animals3%
A61KPreparations for medical, dental or toiletry purposes3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to BP CHEMICALS ADDITIVES (1)· patent assignee history
2002–2014Patents assigned to LUBRIZOL CORP (4)· patent assignee history
2002–2006Based in Belper, GB· patent location history
2010–2014Based in Hudson, OH, US· patent location history
2014Patents assigned to BARR DOUGLAS M (1)· patent assignee history
2017–2021Patents assigned to KOCH AGRONOMIC SERVICES LLC (5)· patent assignee history
2017–2021Based in Decatur, GA, US· patent location history
2018Patents assigned to BARR DOUGLAS (1)· patent assignee history
2018Based in Cornish, ME, US· patent location history
2019Based in Wichita, KS, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOCH AGRONOMIC SERVICES LLC52017–2021
LUBRIZOL CORP42002–2014
BARR DOUGLASself12018
BARR DOUGLAS Mself12014
BP CHEMICALS ADDITIVES11997
Locations
LocationPatentsSpan
Decatur, Georgia, US42017–2021
Hudson, OH, US22010–2014
Belper, GB22002–2006
Wichita, KS, US12019
Cornish, ME, US12018