Inventor · disambiguated record
Richard J. Lenczewski
Also filed as: LENCZEWSKI RICHARD J
3 granted patents·139 citations·filing 1991–1993
76Inventor score
Top patents by PatentIndex Score
3 records- 0189US5294255APumpable backfill groutSPECRETE IP INC·Filed 1992·Granted Mar 15, 1994·74 cites·8 claims
- 0282US5356446ALow density insulating and fire-resistant perlite concreteSMETANA DAVID A·Filed 1993·Granted Oct 18, 1994·43 cites·14 claims
- 0359US5302200AHydrating and plasticizing admixture for dense concreteSPECRETE IP INC·Filed 1991·Granted Apr 12, 1994·22 cites·5 claims
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