Inventor

James E. Johnston

Inventor
Waltham, MA, US

Overview

11→
Patents
1979–2001
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 11 as inventor

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

A62Dprimary
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
Y10TTechnical subjects covered by former us classification12%
C22BProduction and refining of metals8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
B09BDisposal of solid waste not otherwise provided for4%
B09CReclamation of contaminated soil4%
B25HWorkshop equipment, e.g. for marking-out work4%
B27GAccessory machines or apparatus for working wood or similar materials4%
B27MWorking of wood not provided for in subclasses b27b - b27l4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to CATERPILLAR TRACTOR CO (1)· patent assignee history
1987–1998Patents assigned to CATERPILLAR INC (3)· patent assignee history
1987–1992Based in Geneseo, IL, US· patent location history
1990Patents assigned to JOHNSTON JAMES E (1)· patent assignee history
1990Based in Miami, FL, US· patent location history
1994–1998Patents assigned to MOLTEN METAL TECH INC (5)· patent assignee history
1994–1998Based in Waltham, MA, US· patent location history
1998Based in Apex, NC, US· patent location history
2001Based in Pineville, LA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MOLTEN METAL TECH INC51994–1998
CATERPILLAR INC31987–1998
CATERPILLAR TRACTOR CO11979
JOHNSTON JAMES Eself11990
Locations
LocationPatentsSpan
Waltham, Massachusetts, US51994–1998
Geneseo, Illinois, US21987–1992
Pineville, LA, US12001
Apex, NC, US11998
Miami, Florida, US11990