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Inventor

Helen I. Chen

Inventor
Rosemead, CA, US

Overview

3→
Patents
1998–2010
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

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

LOC26primary
LOC2650%
A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body25%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing25%
PatentTitleYear
7,833,178'Heel elongator and calf stretcher with toe bar'2010D0403800'Rotatable space lamp'1999D0397477'Automatic rotatable lighting apparatus'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–1999Patents assigned to CHEN HELEN I (2)· patent assignee history
1998–1999Based in Rosemead, CA, US· patent location history
2010Patents assigned to CHEN HELEN (1)· patent assignee history
2010Patents assigned to LEE JAY (1)· patent assignee history
2010Based in Richmond, BC, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHEN HELEN Iself21998–1999
CHEN HELENself12010
LEE JAY12010
Locations
LocationPatentsSpan
Rosemead, California, US21998–1999
Richmond, BC, CA12010