Inventor
Stephen J. Yamartino
Inventor
Wayland, MA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests38%
F04BPositive-displacement machines for liquids31%
B01DSeparation6%
F16KValves6%
F25BRefrigeration machines, plants or systems6%
F25DRefrigerators6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
6,510,697'System and method for recovering from a power failure in a cryopump'20036,327,863'Cryopump with gate valve control'20015,862,671'Purge and rough cryopump regeneration process, cryopump and controller'19995,775,109'Enhanced cooldown of multiple cryogenic refrigerators supplied by a common compressor'19985,375,424'Cryopump with electronically controlled regeneration'19945,156,007'Cryopump with improved second stage passageway'19925,137,050'Pressure relief valve and cryopump utilizing the same'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2003Patents assigned to HELIX TECH CORP (7)· patent assignee history
1992–2003Based in Wayland, MA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HELIX TECH CORP | 7 | 1992–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wayland, Massachusetts, US | 7 | 1992–2003 |