Inventor · disambiguated record
Howard Heil
Also filed as: HEIL HOWARD · HEIL HOWARD W
4 granted patents·83 citations·filing 1992–2008
76Inventor score
Top patents by PatentIndex Score
4 records- 0176US6561214B2Hydrant with improved drain mechanismFiled 2001·Granted May 13, 2003·25 cites·25 claims
- 0271US6435209B1Method and apparatus for preventing ice formation in water towersFiled 2001·Granted Aug 20, 2002·27 cites·11 claims
- 0366US5218987AMethod and apparatus for water surge protection and protection of fire hydrant systemsHEIL HOWARD W·Filed 1992·Granted Jun 15, 1993·31 cites·15 claims
- 0440US8555911B2Method and apparatus for water surge protectionHEIL HOWARD·Filed 2008·Granted Oct 15, 2013·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →