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Inventor

Randolph T. Johnson

Inventor
Waldorf, MD, US

Overview

4→
Patents
2001–2013
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 as inventor

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

F02Kprimary
F02KJet-propulsion plants40%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants20%
F41AFunctional features or details common to both smallarms and ordnance, e.g. cannons20%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition20%
PatentTitleYear
8,545,646'High-density rocket propellant'20136,629,416'Afterburning aerospike rocket nozzle'20036,354,075'Vented rocket motor spacer'20026,321,656'Thermally actuated release mechanism'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2013Patents assigned to US NAVY (4)· patent assignee history
2001–2013Based in Waldorf, MD, US· patent location history
2013Patents assigned to BRAGUNIER DIANA O (1)· patent assignee history
2013Patents assigned to JOHNSON RANDOLPH T (1)· patent assignee history
2013Patents assigned to SANFORD MATTHEW J (1)· patent assignee history
2013Patents assigned to STILES STEPHEN N (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
US NAVY42001–2013
BRAGUNIER DIANA O12013
JOHNSON RANDOLPH Tself12013
SANFORD MATTHEW J12013
STILES STEPHEN N12013
Locations
LocationPatentsSpan
Waldorf, Maryland, US42001–2013