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Inventor

Marcia Boyle Johnson

Inventor
Lebanon, OH, US

Overview

3→
Patents
2014–2018
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines27%
F04DNon-positive-displacement pumps27%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants18%
Y02TClimate change mitigation technologies related to transportation18%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
10,087,772Method and apparatus for active clearance control for high pressure compressors using fan/booster exhaust air20188,662,834'Method for reducing tip rub loading'20148,657,570'Rotor blade with reduced rub loading'2014

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2014–2018Patents assigned to GEN ELECTRIC (3)· patent assignee history
2014Patents assigned to CRALL DAVID W (2)· patent assignee history
2014Patents assigned to FARSON MAX ROBERT (2)· patent assignee history
2014Patents assigned to GARDNER DONALD LEE (2)· patent assignee history
2014Patents assigned to JOHNSON MARCIA BOYLE (2)· patent assignee history
2014–2018Based in Lebanon, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GEN ELECTRIC32014–2018
CRALL DAVID W22014
FARSON MAX ROBERT22014
GARDNER DONALD LEE22014
JOHNSON MARCIA BOYLEself22014
Locations
LocationPatentsSpan
Lebanon, OH, US32014–2018