Assignee
CORMA INC
CA·10 granted patents·208 citations·filing 1986–2009
Top patents by PatentIndex Score
10 records- 0191US5296188AMethods for forming tubing utilizing suction and pneumatic pressure at the surface of the cooling plugCORMA INC·Filed 1992·Granted Mar 22, 1994·72 cites·10 claims
- 0287US7691317B2Method and device for manufacturing a double-walled, thermoplastic tube with a connecting sleeveCORMA INC·Filed 2009·Granted Apr 6, 2010·8 cites·23 claims
- 0381US5330600AMethod of modifying corrugated or ribbed pipe to have a smooth outer wallCORMA INC·Filed 1992·Granted Jul 19, 1994·33 cites·13 claims
- 0468US5383998AApparatus for modifying corrugated or ribbed pipe to have a smooth outer wallCORMA INC·Filed 1994·Granted Jan 24, 1995·28 cites·15 claims
- 0558US5545369AClamshell corrugators and the likeCORMA INC·Filed 1993·Granted Aug 13, 1996·19 cites·13 claims
- 0658US5466402AGap adjustment of a plastic flow channel in a plastic part forming deviceCORMA INC·Filed 1994·Granted Nov 14, 1995·19 cites·16 claims
- 0754US5186878AImprovements relating to cooling plugs in thermoplastic pipe forming apparatus and processCORMA INC·Filed 1992·Granted Feb 16, 1993·17 cites·9 claims
- 0839US5516482ATravelling mold tunnel apparatus for smooth walled pipeCORMA INC·Filed 1991·Granted May 14, 1996·8 cites·28 claims
- 0928US6576180B1Process for the production of corrugated plastic tubesCORMA INC·Filed 1999·Granted Jun 10, 2003·2 cites·12 claims
- 1025US4780165AMethod and apparatus for encasing drainage pipesCORMA INC·Filed 1986·Granted Oct 25, 1988·2 cites·8 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →