Inventor

David F. Lahrman

Inventor

Powell, OH, US

Overview

23→

Patents

1987–2015

Patent span

Chemistry

Primary field (CPC C)

Patents· 23 as inventor

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

C21Dprimary

C21DModifying the physical structure of ferrous metals27%

B23KSoldering or unsoldering18%

C22CAlloys7%

F01DNon-positive displacement machines or engines, e.g. steam turbines7%

G01NInvestigating or analysing materials by determining their chemical or physical properties7%

Y10TTechnical subjects covered by former us classification7%

C30BSingle-crystal growth5%

Y02TClimate change mitigation technologies related to transportation5%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants4%

G01BMeasuring length, thickness or similar linear dimensions4%

PatentTitleYear

9,201,017'Photon doppler velocimetry for laser bond inspection'2015 RE043176'Laser peening process and apparatus using a liquid erosion-resistant opaque overlay coating'2012 7,906,745'Bend bar quality control method for laser shock peening'2011 7,868,268'Laser peening process and apparatus using a liquid erosion-resistant opaque overlay coating'2011 7,268,317'Laser peening process and apparatus using a liquid erosion-resistant opaque overlay coating'2007 6,875,953'Method using laser shock processing to provide improved residual stress profile characteristics'2005 6,867,390'Automated positioning of mobile laser peening head'2005 6,841,755'Overlay control for laser peening'2005 6,759,626'System for laser shock processing objects to produce enhanced stress distribution profiles'2004 6,752,593'Articles having improved residual stress profile characteristics produced by laser shock peening'2004 6,664,506'Method using laser shock processing to provide improved residual stress profile characteristics'2003 6,548,782'Overlay control for laser peening'2003 6,539,773'Shock pressure gauge for laser peening apparatus'2003 6,483,578'Mechanical gauges for quality assurance of laser peening'2002 6,462,308'Utilizing altered vibration responses of workpieces, such as gas turbine engine blades'2002 6,412,331'Shock pressure gauge for laser peening apparatus'2002 5,837,385'Environmental coating for nickel aluminide components and a method therefor'1998 5,516,380'NiAl intermetallic alloy and article with improved high temperature strength'1996 5,215,831'Ductility Ni-Al intermetallic compounds microalloyed with iron'1993 5,116,691'Ductility microalloyed NiAl intermetallic compounds'1992 5,116,438'Ductility NiAl intermetallic compounds microalloyed with gallium'1992 4,818,118'Coating thickness measurement'1989 4,634,291'Coating thickness measurement'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1998Patents assigned to GEN ELECTRIC (7)· patent assignee history

1987–1989Based in Champaign, IL, US· patent location history

1992–1993Based in Mason, OH, US· patent location history

1996–2015Based in Powell, OH, US· patent location history

2002–2015Patents assigned to LSP TECHNOLOGIES INC (15)· patent assignee history

2012–2015Patents assigned to LAHRMAN DAVID F (2)· patent assignee history

2012–2015Patents assigned to TENAGLIA RICHARD D (2)· patent assignee history

2012Patents assigned to DULANEY JEFF L (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LSP TECHNOLOGIES INC	15	2002–2015
GEN ELECTRIC	7	1987–1998
LAHRMAN DAVID Fself	2	2012–2015
TENAGLIA RICHARD D	2	2012–2015
DULANEY JEFF L	1	2012

Locations

Location	Patents	Span
Powell, OH, US	18	1996–2015
Mason, OH, US	3	1992–1993
Champaign, Illinois, US	2	1987–1989