HM

Hai-Ping Ma

ES Eg&G Sealol: 2 patents #8 of 26Top 35%
PA Parker-Hannifin: 1 patents #643 of 1,656Top 40%
Overall (All Time): #1,523,485 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9151387 Ultra-high vacuum metallic seal Amitava Datta, Jeremy Payne 2015-10-06
6042121 Metallic sealing ring Matthew D. Cunningham, Amitava Datta 2000-03-28
5370402 Pressure balanced compliant seal device James F. Gardner 1994-12-06