David C. Ristau

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Erie, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for manufacturing a stack trim
- Patent number 11,691,231
- Issue date Jul 4, 2023
- Celeros Flow Technology, LLC
- Robert Wnek
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Balanced double seated globe valve with flexible plub
- Patent number 9,677,673
- Issue date Jun 13, 2017
- SPX FLOW, INC.
- David C. Ristau
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Desuperheater seat-ring apparatus
- Patent number 8,469,341
- Issue date Jun 25, 2013
- SPX Corporation
- David Ristau
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Systems and Methods for Manufacturing a Stack Trim
- Publication number 20230286086
- Publication date Sep 14, 2023
- Celeros Flow Technology, LLC
- Robert Wnek
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Systems and Methods for Manufacturing a Stack Trim
- Publication number 20220339745
- Publication date Oct 27, 2022
- Celeros Flow Technology, LLC
- Robert Wnek
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Balanced Double Seated Globe Valve With Flexible Plub
- Publication number 20160102766
- Publication date Apr 14, 2016
- SPX Corporation
- David C. RISTAU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
DESUPERHEATER SEAT-RING APPARATUS
- Publication number 20110298141
- Publication date Dec 8, 2011
- SPX Corporation
- David Ristau
- F22 - STEAM GENERATION