CONTINENTAL EMSCO COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5423158 Vertically erected mastApr 02, 93Jun 13, 95[F04G, F04H]
RE31016 Anti-friction sucker rod guide assemblyDec 22, 80Aug 24, 82[F16C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5405457 High strength sucker rod couplingExpiredApr 08, 94Apr 11, 95[C21D]
5405461 Method of producing high Strength sucker rod couplingExpiredApr 08, 94Apr 11, 95[C21D]
5334268 Method of producing high strength sucker rod couplingExpiredDec 17, 92Aug 02, 94[C21D]
5071288 Subsea inflation and grout systemExpiredJun 19, 89Dec 10, 91[E02B, E02D]
4987925 Loading arm with a lock-down deviceExpiredSep 29, 89Jan 29, 91[F16L]
4789271 Remote fluid transfer system and method for sub-sea baseplates and templatesExpiredJul 29, 87Dec 06, 88[E02B, E02D]
4696377 Brake system for drawworksExpiredSep 27, 85Sep 29, 87[F16D]
4696602 Apparatus and system for flooding submerged structuresExpiredMar 27, 86Sep 29, 87[E02B, E02D]
4638726 Load bearing swab cupExpiredApr 10, 85Jan 27, 87[F16J]
4576522 Rupturable closureExpiredSep 21, 84Mar 18, 86[E02B]
4567840 Closure for a chain entry apertureExpiredJun 30, 83Feb 04, 86[B63B]
4545017 Well drilling apparatus or the like with position monitoring systemExpiredMar 22, 82Oct 01, 85[G01P]
4537233 Spring balance assemblyExpiredJun 21, 83Aug 27, 85[B65B]
4505334 Ball sealerExpiredSep 06, 83Mar 19, 85[E21B]
4494738 Shock-absorbing joint and assembly with rotating arms and elastomeric spring actionExpiredMar 08, 82Jan 22, 85[F16F]
4493592 Grouting methodExpiredSep 28, 82Jan 15, 85[E02B]
4471587 Dual swing-up elevator well drilling apparatusExpiredFeb 22, 82Sep 18, 84[E04B, B66C]
4421138 Dog locking sleeveExpiredJul 23, 82Dec 20, 83[F16L]
4412559 Dog locking sleeveExpiredJul 09, 82Nov 01, 83[F16L]
4412759 Reach rod grouting systemExpiredJun 23, 80Nov 01, 83[E02B, E02D]

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