MULTI PRODUCTS COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
E21B EARTH OR ROCK DRILLING 294
 
 
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6637515 Method and apparatus for reducing plunger seal wear on automatic casing swab lift systemsApr 06, 01Oct 28, 03[E21B]
5253713 Gas and oil well interface tool and intelligent controllerMar 19, 91Oct 19, 93[F04B, E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5132904 Remote well head controller with secure communications portExpiredMar 07, 90Jul 21, 92[G06F, E21B]
4989671 Gas and oil well controllerExpiredAug 07, 89Feb 05, 91[E21B]
4383552 Adjustable chokeExpiredOct 16, 81May 17, 83[F15D]
4291761 Magnetic sensing deviceExpiredApr 18, 80Sep 29, 81[H01H]
4235288 Well pumping control systemExpiredSep 22, 78Nov 25, 80[E21B]

Top Inventors for This Owner

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