Inventor
Edward Johnston
Inventor
Winnipeg, Manitoba, CA
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B28Dprimary
B28DWorking stone or stone-like materials15%
B23DPlaning10%
E02DFoundations10%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
Y10TTechnical subjects covered by former us classification10%
B05BSpraying apparatus5%
F03BMachines or engines for liquids5%
F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g5%
G06FElectric digital data processing5%
G06NComputing arrangements based on specific computational models5%
PatentTitleYear
10,909,286Optimization techniques for quantum computing device simulation20217,197,805'Embedment removal method'20075,329,562'Method of cutting and removing nuclear reactor'19944,832,411'Method and apparatus for cutting reinforced concrete'19894,462,535'Apparatus and process for manufacture of tunnel tubes'19844,418,561'Apparatus for manufacture of tunnel tubes'19834,144,837'Coating apparatus'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979Patents assigned to CARRIER DRYSYS LTD (1)· patent assignee history
1979Based in Chertsey, GB· patent location history
1983–1984Patents assigned to AMCA INT CORP (2)· patent assignee history
1983–1984Based in Newark, DE, US· patent location history
1989–2007Patents assigned to JOHNSTON EDWARD P (2)· patent assignee history
1989Patents assigned to JOHNSTON JOHN D (1)· patent assignee history
1989–2007Based in Winnipeg, Manitoba, CA· patent location history
1994Patents assigned to DYMOSHA KK (1)· patent assignee history
1994Based in Winnipeg, CA· patent location history
2021Based in San Francisco, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AMCA INT CORP | 2 | 1983–1984 |
| JOHNSTON EDWARD Pself | 2 | 1989–2007 |
| CARRIER DRYSYS LTD | 1 | 1979 |
| DYMOSHA KK | 1 | 1994 |
| JOHNSTON JOHN D | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Winnipeg, Manitoba, CA | 2 | 1989–2007 |
| Newark, Delaware, US | 2 | 1983–1984 |
| San Francisco, California, US | 1 | 2021 |
| Winnipeg, CA | 1 | 1994 |
| Chertsey, GB | 1 | 1979 |