Hans-Joachim Friedrich

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Auenwald, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing a web of plastic turf for sports grounds
- Patent number 5,019,194
- Issue date May 28, 1991
- J. F. Adolff AG
- Hans-Joachim Friedrich
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Artificial turf with playing field markings
- Patent number 4,755,401
- Issue date Jul 5, 1988
- J. F. Adolff AG
- Hans-Joachim Friedrich
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Method of applying and bonding free-flowing bulb material to artifi...
- Patent number 4,735,825
- Issue date Apr 5, 1988
- J. F. Adolff AG
- Hans J. Friedrich
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Backing mat for a ground covering, preferably for a water-permeable...
- Patent number 4,535,021
- Issue date Aug 13, 1985
- J. F. Adolff AG
- Hans-Joachim Friedrich
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Method of bonding a floor-covering web with a backing web
- Patent number 4,477,299
- Issue date Oct 16, 1984
- J. F. Adolff AG
- Hans-Joachim Friedrich
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Water permeable ground covering for open spaces
- Patent number 4,444,815
- Issue date Apr 24, 1984
- J. F. Adolff AG
- Hans-Joachim Friedrich
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES