Inventor · disambiguated record
Robert C. Buttner
Also filed as: BUTTNER ROBERT C
4 granted patents·132 citations·filing 1981–1983
78Inventor score
Files withCONCRETE PIPE & PRODUCTS CORP4
Top patents by PatentIndex Score
4 records- 0189US4426095AFlexible sealCONCRETE PIPE & PRODUCTS CORP·Filed 1981·Granted Jan 17, 1984·86 cites·5 claims
- 0271US4429886AFlexible pipe gasketCONCRETE PIPE & PRODUCTS CORP·Filed 1982·Granted Feb 7, 1984·34 cites·8 claims
- 0337US4494576AReinforcing system for concrete pipeCONCRETE PIPE & PRODUCTS CORP·Filed 1983·Granted Jan 22, 1985·10 cites·5 claims
- 0427US4428522AStep driverCONCRETE PIPE & PRODUCTS CORP·Filed 1981·Granted Jan 31, 1984·2 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →