Inventor

James A. Hartwell

Inventor

Elkton, MD, US

Overview

9→

Patents

1989–2006

Patent span

Chemistry

Primary field (CPC C)

Patents· 9 as inventor

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

C06Bprimary

C06BExplosives or thermic compositions33%

F02KJet-propulsion plants17%

F42BExplosive charges, e.g. for blasting, fireworks, ammunition8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

B29CShaping or joining of plastics4%

B29LIndexing scheme associated with subclass b29c, relating to particular articles4%

C04BLime, magnesia4%

C06DMeans for generating smoke or mist4%

C08LCompositions of macromolecular compounds4%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines4%

PatentTitleYear

6,997,996'High energy thermoplastic elastomer propellant'2006 6,324,833'Reinforced composite articles and method of making same'2001 6,171,530'Process for the manufacture of high performance gun propellants'2001 5,762,746'Method of internally insulating a propellant combustion chamber'1998 5,759,458'Process for the manufacture of high performance gun propellants'1998 5,616,884'Propellant gas-generation system for canister ejection'1997 5,363,768'Propellant gas-generation system for canister ejection'1994 5,028,283'Ionomer based high-energy compositions'1991 4,889,571'High-energy compositions having castable thermoplastic binders'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to THIOKOL MORTON INC (1)· patent assignee history

1989–2001Based in Elkton, MD, US· patent location history

1991–1998Patents assigned to THIOKOL CORP (5)· patent assignee history

2001Patents assigned to CORDANT TECH INC (2)· patent assignee history

2006Patents assigned to US ARMY (1)· patent assignee history

2006Based in Elton, MD, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
THIOKOL CORP	5	1991–1998
CORDANT TECH INC	2	2001
THIOKOL MORTON INC	1	1989
US ARMY	1	2006

Locations

Location	Patents	Span
Elkton, Maryland, US	8	1989–2001
Elton, Maryland, US	1	2006