HEIDELBERGER ZEMENT AG
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Sep 16, 1997 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 91 Total Citation Count
- Jul 11, 1979 Earliest Filing
- 11 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
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Recent Publications
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4778276 Device and process for continuous supply of hydraulically setting compoundExpiredAug 15, 86Oct 18, 88[B28C, B01F]
4657623 Process and apparatus for the manufacture of tubular hollow bodies and the use thereofExpiredJan 25, 80Apr 14, 87[B32B]
4632720 Apparatus for preparing an annular body of a hydraulically setting massExpiredMay 16, 84Dec 30, 86[B31C]
4472335 Method for preparing an annular body of a hydraulically setting massExpiredFeb 03, 83Sep 18, 84[B32B]
4312904 Fast-hardening hydraulic cement mass and surfacing method using the massExpiredApr 09, 80Jan 26, 82[F16L, B32B]
4280418 Method of combining in-the-mill drying and firing of coal with enhanced heat recoveryExpiredJul 11, 79Jul 28, 81[F23D]
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