Inventor

David N. Kramer

Inventor
Stevenson, MD, US

Overview

8→
Patents
1980–1997
Patent span
Human necessities
Primary field (CPC A)

Patents· 8 as inventor

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

A01Nprimary
A01NPreservation of bodies of humans or animals or plants or parts thereof15%
A61LMethods or apparatus for sterilising materials or objects in general15%
C11DDetergent compositions15%
A61KPreparations for medical, dental or toiletry purposes12%
A61QSpecific use of cosmetics or similar toiletry preparations12%
G01NInvestigating or analysing materials by determining their chemical or physical properties8%
A46BBrushes4%
A61FFilters implantable into blood vessels4%
A61MDevices for introducing media into, or onto, the body4%
C07DHeterocyclic compounds4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to CATALYST RESEARCH CORP (1)· patent assignee history
1980–1997Based in Stevenson, MD, US· patent location history
1988–1989Patents assigned to KRAMER DAVID N (3)· patent assignee history
1988Patents assigned to SNOW PHILIP A (1)· patent assignee history
1990Patents assigned to RIDGELY PRODUCTS CO INC (1)· patent assignee history
1994–1997Patents assigned to STERILEX CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KRAMER DAVID Nself31988–1989
STERILEX CORP21994–1997
CATALYST RESEARCH CORP11980
RIDGELY PRODUCTS CO INC11990
SNOW PHILIP A11988
Locations
LocationPatentsSpan
Stevenson, Maryland, US81980–1997