Assignee
HEIDELBERGER ZEMENT AG
DE·15 granted patents·213 citations·filing 1979–1997
Top patents by PatentIndex Score
15 records- 0188US4292364AMulti-layer boardHEIDELBERGER ZEMENT AG·Filed 1979·Granted Sep 29, 1981·58 cites·21 claims
- 0276US4280418AMethod of combining in-the-mill drying and firing of coal with enhanced heat recoveryHEIDELBERGER ZEMENT AG·Filed 1979·Granted Jul 28, 1981·27 cites·12 claims
- 0360US5667582AMethod for dry desulfurizing flue gasesHEIDELBERGER ZEMENT AG·Filed 1996·Granted Sep 16, 1997·18 cites·8 claims
- 0460US4778276ADevice and process for continuous supply of hydraulically setting compoundHEIDELBERGER ZEMENT AG·Filed 1986·Granted Oct 18, 1988·27 cites·8 claims
- 0556US6146133AProcess for the recycling of residues for the production of portland cement clinkerHEIDELBERGER ZEMENT AG·Filed 1997·Granted Nov 14, 2000·18 cites·3 claims
- 0648US4657623AProcess and apparatus for the manufacture of tubular hollow bodies and the use thereofHEIDELBERGER ZEMENT AG·Filed 1980·Granted Apr 14, 1987·13 cites·7 claims
- 0742US4632720AApparatus for preparing an annular body of a hydraulically setting massHEIDELBERGER ZEMENT AG·Filed 1984·Granted Dec 30, 1986·8 cites·3 claims
- 0841US6238474B1Quick-setting, hydraulic binding agentHEIDELBERGER ZEMENT AG·Filed 1993·Granted May 29, 2001·10 cites·7 claims
- 0937US4312904AFast-hardening hydraulic cement mass and surfacing method using the massHEIDELBERGER ZEMENT AG·Filed 1980·Granted Jan 26, 1982·6 cites·15 claims
- 1036US4472335AMethod for preparing an annular body of a hydraulically setting massHEIDELBERGER ZEMENT AG·Filed 1983·Granted Sep 18, 1984·6 cites·19 claims
- 1134US4810552ATension chord made of hydraulically setting massesHEIDELBERGER ZEMENT AG·Filed 1986·Granted Mar 7, 1989·8 cites·15 claims
- 1228US4655982AMethod for the continuous production of plates of fibre reinforced concreteHEIDELBERGER ZEMENT AG·Filed 1985·Granted Apr 7, 1987·5 cites·18 claims
- 1324US4899915ASilo for bulk goodsHEIDELBERGER ZEMENT AG·Filed 1984·Granted Feb 13, 1990·5 cites·10 claims
- 1417US5667581AQuick-hardening hydraulic bonding agentHEIDELBERGER ZEMENT AG·Filed 1996·Granted Sep 16, 1997·2 cites·9 claims
- 1514US5566467ACyclone heat exchangerHEIDELBERGER ZEMENT AG·Filed 1995·Granted Oct 22, 1996·2 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →