Steven Hafernik

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Hydro-pneumatic cylinder with annulus fluid bypass
- Patent number 11,603,716
- Issue date Mar 14, 2023
- Dril-Quip, Inc.
- Neil B. Prasad
- E21 - EARTH DRILLING MINING
Information Patent Grant
Enhanced ram-style riser tensioner
- Patent number 9,926,751
- Issue date Mar 27, 2018
- Dril-Quip, Inc.
- Steven M. Hafernik
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Enhanced ram-style riser tensioner cylinder
- Patent number 9,784,052
- Issue date Oct 10, 2017
- Dril-Quip, Inc.
- Fife B. Ellis
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Deflection absorbing tensioner frame
- Patent number 9,682,752
- Issue date Jun 20, 2017
- Dril-Quip, Inc.
- Fife B. Ellis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Methods and systems for tensioner connection
- Patent number 9,540,890
- Issue date Jan 10, 2017
- Dril-Quip, Inc.
- Neil B. Prasad
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydro-pneumatic tensioner with fluid retention device
- Patent number 9,470,049
- Issue date Oct 18, 2016
- Dril-Quip, Inc.
- Fife B. Ellis
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Riser tensioning system
- Patent number 9,181,761
- Issue date Nov 10, 2015
- Dril-Quip, Inc.
- Steven Hafernik
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
HYDRO-PNEUMATIC CYLINDER WITH ANNULUS FLUID BYPASS
- Publication number 20210355762
- Publication date Nov 18, 2021
- Dril-Quip, Inc.
- Neil B. Prasad
- E21 - EARTH DRILLING MINING
Information Patent Application
METHODS AND SYSTEMS FOR TENSIONER CONNECTION
- Publication number 20160376854
- Publication date Dec 29, 2016
- Dril-Quip, Inc.
- Neil B. Prasad
- E21 - EARTH DRILLING MINING
Information Patent Application
ENHANCED RAM-STYLE RISER TENSIONER CYLINDER
- Publication number 20160145951
- Publication date May 26, 2016
- Dril-Quip, Inc.
- Fife B. Ellis
- E21 - EARTH DRILLING MINING
Information Patent Application
ENHANCED RAM-STYLE RISER TENSIONER
- Publication number 20160145952
- Publication date May 26, 2016
- Dril-Quip, Inc.
- Steven M. Hafernik
- E21 - EARTH DRILLING MINING
Information Patent Application
DEFLECTION ABSORBING TENSIONER FRAME
- Publication number 20160024853
- Publication date Jan 28, 2016
- Dril-Quip, Inc.
- Fife B. Ellis
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
RISER TENSIONING SYSTEM
- Publication number 20150136412
- Publication date May 21, 2015
- Dril-Quip, Inc.
- Steven Hafernik
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
HYDRO-PNEUMATIC TENSIONER WITH FLUID RETENTION DEVICE
- Publication number 20140202327
- Publication date Jul 24, 2014
- Dril-Quip, Inc.
- Fife B. Ellis
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Steven Hafernik

Person

Patents Grantslast 30 patents

Hydro-pneumatic cylinder with annulus fluid bypass

Enhanced ram-style riser tensioner

Enhanced ram-style riser tensioner cylinder

Deflection absorbing tensioner frame

Methods and systems for tensioner connection

Hydro-pneumatic tensioner with fluid retention device

Riser tensioning system

Patents Applicationslast 30 patents

HYDRO-PNEUMATIC CYLINDER WITH ANNULUS FLUID BYPASS

METHODS AND SYSTEMS FOR TENSIONER CONNECTION

ENHANCED RAM-STYLE RISER TENSIONER CYLINDER

ENHANCED RAM-STYLE RISER TENSIONER

DEFLECTION ABSORBING TENSIONER FRAME

RISER TENSIONING SYSTEM

HYDRO-PNEUMATIC TENSIONER WITH FLUID RETENTION DEVICE