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For the Inventor, By the Inventor

Ratingen, Germany

Friedrich Lenze

USPTO Granted Patents = 10

Average Co-Inventor Count = 2.8

ph-index = 8

Forward Citations = 311(Granted Patents)


Location History:

  • Dusseldorf, DE (1983)
  • Ratingen, DE (1986 - 2003)

Company Filing History:

goldMedal8 out of 1,150 
 
Mannesmann Aktiengesellschaft
 patents
silverMedal1 out of 1 
 
Vallourec Mannesmann Oil & Gas Germany Gmbh
 patent
bronzeMedal1 out of 1 
 
Mannesmann Aktiengellschaft
 patent

Years Active: 1983-2003

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10 patents (USPTO):Explore Patents
1. 6585299 - Pipe connector (2003-07-01),
2. 6511102 - Pipe connector (2003-01-28),
3. 6155613 - Pipe joint (2000-12-05),
4. 5394823 - Pipeline with threaded pipes and a sleeve connecting the same (1995-03-07),
5. 5275445 - Gas-tight pipe connection (1994-01-04),
6. 5048871 - Screwed pipe joint (1991-09-17),
7. 4955644 - Drill pipe coupling (1990-09-11),
8. 4611838 - Fluidtight pipe joint (1986-09-16),
9. 4595219 - Gas tightly sealed joint in oil field tubular goods (1986-06-17),
10. 4414247 - Method for surface treatment of threading (1983-11-08),
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