HEGLER, WILHELM

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5320797 Method and apparatus for the continuous manufacture of a compound pipe with a pipe socketMar 09, 93Jun 14, 94[B29C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5953974 Apparatus for cutting slots in corrugated and twin-wall pipesExpiredSep 19, 94Sep 21, 99[B26D]
5560941 Apparatus for the manufacture of corrugated pipes of thermoplastic plasticsExpiredApr 24, 95Oct 01, 96[B29C]
5511964 Apparatus for the production of plastic pipesExpiredMar 06, 92Apr 30, 96[B29C]
5489403 Method for welding pipe pieces made of thermoplasticsExpiredMar 02, 94Feb 06, 96[B29C]
5472659 Method for continuously manufacturing compound corrugated pipe having smooth portionsExpiredNov 19, 93Dec 05, 95[B29C]
5393211 Apparatus for the manufacture of a plastic pipe having transverse profile featuresExpiredJul 22, 93Feb 28, 95[B29C, B29D]
5346384 Apparatus for the production of plastic pipesExpiredMar 06, 92Sep 13, 94[B29C]
5320697 Method for welding together pipes consisting of thermoplastic plasticsExpiredAug 26, 92Jun 14, 94[B29C]
5141427 Apparatus for the production of plastic pipesExpiredJul 08, 91Aug 25, 92[B29C]
5071173 Plastic pipe for sewer pipe reconstructionExpiredJun 25, 90Dec 10, 91[F16L]
4930936 Partial-seepage drainage pipe with mating sleeveExpiredFeb 06, 84Jun 05, 90[F16L, E02B]
4915425 Pipe connecting elementExpiredOct 19, 88Apr 10, 90[F16L]
4900503 Method and apparatus for producing a finned tube from synthetic plastics materialExpiredJul 29, 88Feb 13, 90[B29C]
4779651 Plastic corrugated tube with integrally molded sleeve couplerExpiredJan 29, 87Oct 25, 88[F16L]
4773451 Double tubing comprising two protective tubes integrally joined to one another by a webExpiredMar 18, 87Sep 27, 88[F16L]
4513787 Corrugated sheathing hoseExpiredOct 26, 83Apr 30, 85[F16L]
4492551 Apparatus for the production of plastic pipes with transverse groovesExpiredMay 10, 82Jan 08, 85[B29C]
4488467 Apparatus for cutting openings in pipesExpiredDec 27, 82Dec 18, 84[B26D]
4381276 Process and apparatus for the fabrication of a flat-shaped hollow bodyExpiredJul 06, 81Apr 26, 83[B29C]
4303104 Double-wall plastic tubing in which the outer wall has transverse corrugations and the inner wall is smoothExpiredJun 02, 80Dec 01, 81[F16L]

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