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Inventor

Hai-Ping Ma

Inventor
Lincoln, RI, US

Overview

3→
Patents
1994–2015
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F16Jprimary
F16JPistons50%
B23PMetal-working not otherwise provided for17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
9,151,387'Ultra-high vacuum metallic seal'20156,042,121'Metallic sealing ring'20005,370,402'Pressure balanced compliant seal device'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2000Patents assigned to SEALOL (2)· patent assignee history
1994–2015Based in Lincoln, RI, US· patent location history
2015Patents assigned to DATTA AMITAVA (1)· patent assignee history
2015Patents assigned to MA HAI-PING (1)· patent assignee history
2015Patents assigned to PARKER HANNIFIN CORP (1)· patent assignee history
2015Patents assigned to PAYNE JEREMY (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEALOL21994–2000
DATTA AMITAVA12015
MA HAI-PINGself12015
PARKER HANNIFIN CORP12015
PAYNE JEREMY12015
Locations
LocationPatentsSpan
Lincoln, RI, US31994–2015