Inventor

Richard D. Walker

Inventor
Decatur, IL, US

Overview

5→
Patents
1984–2006
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

B60Kprimary
B60KArrangement or mounting of propulsion units or of transmissions in vehicles18%
Y10TTechnical subjects covered by former us classification18%
B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles9%
B60PVehicles adapted for load transportation or to transport, to carry, or to comprise special loads or objects9%
B62DMotor vehicles9%
D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials9%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general9%
F16HGearing9%
Y02TClimate change mitigation technologies related to transportation9%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to PROCTER & GAMBLE (1)· patent assignee history
1984Based in Wyoming, OH, US· patent location history
1995–1998Patents assigned to CATERPILLAR INC (2)· patent assignee history
1995–1998Based in Decatur, IL, US· patent location history
2003Patents assigned to CATERPILLAR SARL (1)· patent assignee history
2003Based in Dalton City, IL, US· patent location history
2006Patents assigned to BLUMENTHAL AUTOMATICS INC (1)· patent assignee history
2006Based in Oklahoma City, OK, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CATERPILLAR INC21995–1998
BLUMENTHAL AUTOMATICS INC12006
CATERPILLAR SARL12003
PROCTER & GAMBLE11984
Locations
LocationPatentsSpan
Decatur, Illinois, US21995–1998
Oklahoma City, OK, US12006
Dalton City, Illinois, US12003
Wyoming, OH, US11984