Inventor

James C. Robertson

Inventor

Lawrenceville, GA, US

Overview

17→

Patents

1977–2018

Patent span

Performing operations

Primary field (CPC B)

Patents· 17 as inventor

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

B61Dprimary

B61DBody details or kinds of railway vehicles31%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

B60PVehicles adapted for load transportation or to transport, to carry, or to comprise special loads or objects6%

E05DHinges or suspension devices for doors, windows or wings6%

E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof6%

F23GCremation furnaces6%

G01SRadio direction-finding6%

Y10TTechnical subjects covered by former us classification6%

A47CChairs3%

A61BDiagnosis3%

PatentTitleYear

9,908,002'Portable, collapsible ergonomic tipping chair'2018 7,275,488'Auto rack railway car'2007 6,289,822'Auto rack railway car'2001 5,787,816'Auto rack side panel assembly'1998 5,765,486'Auto rack railway car'1998 5,673,697'High-resolution three, dimensional ultrasound imaging device'1997 5,233,932'Shredder/compactor auger system'1993 5,091,917'Method and apparatus for pulse sorting'1992 5,022,328'Shredder/compactor auger system'1991 4,966,402'Aerial lift support frame'1990 4,836,726'Vehicle wheel chock for securing vehicles during transport'1989 4,759,669'Vehicle transporting railroad car with hinged deck section lock'1988 4,677,918'Railroad car with retractable closure track held down by bridge plate'1987 4,437,410'Pivotal slidable vehicle end enclosure'1984 4,263,853'Rail car end door positioning keeper assembly'1981 4,084,516'Foldable slidable vehicle end enclosure'1978 4,059,055'Railway car hinge-deck lock'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1984Patents assigned to PORTEC INC (4)· patent assignee history

1977–1984Based in Ypsilanti, MI, US· patent location history

1987–2001Patents assigned to THRALL CAR MFG CO (6)· patent assignee history

1987–2007Based in Lawrenceville, GA, US· patent location history

1990Patents assigned to ROBERTSON JAMES (1)· patent assignee history

1991–1993Patents assigned to ENSCO INC (2)· patent assignee history

1991–1993Based in Mabelvale, AR, US· patent location history

1992–1997Patents assigned to RAYTHEON CO (2)· patent assignee history

1992–1997Based in Santa Barbara, CA, US· patent location history

2018Based in Williamstown, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
THRALL CAR MFG CO	6	1987–2001
PORTEC INC	4	1977–1984
ENSCO INC	2	1991–1993
RAYTHEON CO	2	1992–1997
ROBERTSON JAMESself	1	1990

Locations

Location	Patents	Span
Lawrenceville, Georgia, US	7	1987–2007
Ypsilanti, MI, US	4	1977–1984
Santa Barbara, California, US	2	1992–1997
Mabelvale, AR, US	2	1991–1993
Williamstown, Massachusetts, US	1	2018