Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/233
Name: Boring or penetrating the earth > With means movable relative to tool below ground to stop flow toward bore bottom > Movable to seal sample receiver at bore bottom pressure
Description: Apparatus in which the movable means seals, or cooperates with another means to seal a sample collecting chamber at the pressure which exists at the bottom of the bore.










Patents under this class:

Patent Number Title Of Patent Date Issued
7775276 Method and apparatus for downhole sampling Aug. 17, 2010
6659204 Method and apparatus for recovering core samples under pressure Dec. 9, 2003
6216804 Apparatus for recovering core samples under pressure Apr. 17, 2001
5555945 Early evaluation by fall-off testing Sep. 17, 1996
5482123 Method and apparatus for pressure coring with non-invading gel Jan. 9, 1996
4950844 Method and apparatus for obtaining a core sample at ambient pressure Aug. 21, 1990
4583595 Method and apparatus for obtaining fluid samples in a well Apr. 22, 1986
4356872 Downhole core barrel flushing system Nov. 2, 1982
4317490 Apparatus and method for obtaining a core at in situ pressure Mar. 2, 1982
4258803 Core barrel for obtaining and retrieving subterranean formation samples Mar. 31, 1981
4256192 Pressure core barrel Mar. 17, 1981
4230192 Core sampling apparatus and method Oct. 28, 1980
4142594 Method and core barrel apparatus for obtaining and retrieving subterranean formation samples Mar. 6, 1979











 
 
  Recently Added Patents
Formulations, their use as or for producing dishwashing detergents and their production
Method and apparatus for internet on-line insurance policy service
Two dimensional magnetic sensor immune to skew angle misalignment
Battery pack with connecting device
Method and apparatus for reacquiring lines in a cache
Position pointer, variable capacitor and inputting apparatus
Soybean cultivar CL1013665
  Randomly Featured Patents
Pattern formation method
Voice messaging system
Process for making morphine-6-glucuronide or substituted morphine-6-glucuronide
Fiber optic connector and its manufacturing method
Strenghtened, pressable ceramic compositions for dental purposes
Process for the synthesis of polysilsesquioxanes and application of the compounds obtained
Synthetic abrasive stones and method for making same
Receipt printing, storage and discharging mechanism
Slide and barrel coupler
Dashpot