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Inventor

Lilong Cai

Inventor
Clearwater Bay, HK

Overview

3→
Patents
1998–2001
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G01Bprimary
G01BMeasuring length, thickness or similar linear dimensions33%
G01DMeasuring not specially adapted for a specific variable33%
G11BInformation storage based on relative movement between record carrier and transducer33%
PatentTitleYear
6,191,911'Positioning apparatus for hard disk servowriter'20015,825,023'Auto focus laser encoder having three light beams and a reflective grating'19985,757,491'Laser interferometer system for straightness measurements'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2001Patents assigned to UNIV HONG KONG SCIENCE & TECHN (3)· patent assignee history
1998Based in Sai Kung, HK· patent location history
1998Based in Hong Kong, CN· patent location history
2001Based in Clearwater Bay, HK· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV HONG KONG SCIENCE & TECHN31998–2001
Locations
LocationPatentsSpan
Clearwater Bay, HK12001
Sai Kung, HK11998
Hong Kong, CN11998