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Inventor

Sam Ma

Inventor
Shenzhen, CN

Overview

6→
Patents
1992–2021
Patent span
LOC
Primary field

Patents· 6 as inventor

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

E05Bprimary
E05BLocks22%
Y10TTechnical subjects covered by former us classification22%
G02BOptical elements, systems or apparatus11%
G03HHolographic processes or apparatus11%
LOC0811%
LOC1311%
LOC1411%
PatentTitleYear
D0931704Electronic lock set2021D0918138Charging case for earphones2021D0915358Earphones20217,913,525'Pointer padlock'20117,698,914'Padlock'20105,148,323'Local reference beam generator'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to ROCKWELL INTERNATIONAL CORP (1)· patent assignee history
1992Based in Agoura, CA, US· patent location history
2010–2011Patents assigned to MA SAM (2)· patent assignee history
2010–2011Based in Changhua County, TW· patent location history
2021Patents assigned to SHENZHEN NA YIN TECH CO LTD (2)· patent assignee history
2021Patents assigned to ZKTECO CO LTD (1)· patent assignee history
2021Based in Shenzhen, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MA SAMself22010–2011
SHENZHEN NA YIN TECH CO LTD22021
ROCKWELL INTERNATIONAL CORP11992
ZKTECO CO LTD12021
Locations
LocationPatentsSpan
Shenzhen, CN32021
Changhua County, TW22010–2011
Agoura, California, US11992