Inventor

Gilbert Norman Ravich

Inventor

Lawndale, CA, US

Overview

6→

Patents

1998–2003

Patent span

Physics

Primary field (CPC G)

Patents· 6 as inventor

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

G01Nprimary

G01NInvestigating or analysing materials by determining their chemical or physical properties25%

G01RMeasuring electric variables25%

G02BOptical elements, systems or apparatus17%

Y10TTechnical subjects covered by former us classification17%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers8%

H05KPrinted circuits8%

PatentTitleYear

6,653,851'Refocusing wavelengths to a common focal plane for electrical trace testing'2003 6,650,489'Gem identification viewer'2003 6,369,590'Apparatus and method using photoelectric effect for testing electrical traces'2002 6,369,591'Apparatus and method using photoelectric effect for testing electrical traces'2002 6,292,315'Gem identification viewer'2001 5,811,817'Method & apparatus for detecting fracture filled diamonds'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2003Based in Lawndale, CA, US· patent location history

2001–2003Patents assigned to GEMOLOGICAL INST AMERICA INC (2)· patent assignee history

2002Patents assigned to MANIATECH INC (2)· patent assignee history

2003Patents assigned to LOMANOHA VENTURES (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GEMOLOGICAL INST AMERICA INC	2	2001–2003
MANIATECH INC	2	2002
LOMANOHA VENTURES	1	2003

Locations

Location	Patents	Span
Lawndale, California, US	6	1998–2003