Inventor · disambiguated record
Allen D. Mathison
Also filed as: MATHISON ALLEN D
23 granted patents·503 citations·filing 1975–1996
96Inventor score
Top patents by PatentIndex Score
23 records- 0193US4614206AExpansible pneumatic plug deviceCHERNE IND INC·Filed 1985·Granted Sep 30, 1986·67 cites·16 claims
- 0291US4493344AMechanical plug deviceCHERNE IND INC·Filed 1983·Granted Jan 15, 1985·89 cites·7 claims
- 0388USD373623SMechanical test plug for overflow and waste drainsCHERNE IND INCORPORATED·Filed 1995·Granted Sep 10, 1996·36 cites·1 claims
- 0483US4691728AElectronic test and seal apparatus and methodCHERNE IND INC·Filed 1986·Granted Sep 8, 1987·43 cites·20 claims
- 0582USD300350SExpansible sealing plug for pipelines and the likeCHERNE IND INC·Filed 1985·Granted Mar 21, 1989·20 cites·1 claims
- 0680US4817671AHigh pressure mechanical plug deviceCHERNE IND INC·Filed 1988·Granted Apr 4, 1989·48 cites·27 claims
- 0778USD379851SExternal sealing cap for pipesCHERNE IND INCORPORATED·Filed 1996·Granted Jun 10, 1997·22 cites·1 claims
- 0874US4572228AConnector valve assembly for inflatable packer deviceCHERNE IND INC·Filed 1984·Granted Feb 25, 1986·26 cites·20 claims
- 0973US4763511APipe joint sealing and testing apparatusCHERNE IND INC·Filed 1986·Granted Aug 16, 1988·29 cites·20 claims
- 1069USD351013SMechanical inspection and sealing plug for a monitoring wellCHERNE IND INCORPORATED·Filed 1992·Granted Sep 27, 1994·14 cites·1 claims
- 1165US3977163AMower-height-of-cut adjustment mechanismTORO CO·Filed 1975·Granted Aug 31, 1976·20 cites·11 claims
- 1257US5353841APneumatic plug for clean-out teesCHERNE IND INC·Filed 1993·Granted Oct 11, 1994·23 cites·19 claims
- 1356USD329687SPipe plug lock unitCHERNE IND INCORPORATED·Filed 1990·Granted Sep 22, 1992·8 cites·1 claims
- 1452USD329686SPipe plug latch unitCHERNE IND INCORPORATED·Filed 1990·Granted Sep 22, 1992·7 cites·1 claims
- 1551US5643386AAssembly process for fabric bag plugCHERNE IND INC·Filed 1995·Granted Jul 1, 1997·15 cites·20 claims
- 1648US5546991AInflatable fabric bag plugCHERNE IND INC·Filed 1995·Granted Aug 20, 1996·14 cites·20 claims
- 1739US4588110APortable waterproofing apparatusCHERNE IND INC·Filed 1985·Granted May 13, 1986·10 cites·20 claims
- 1837USD370055SSmall drain flushing expandable plugCHERNE IND INCORPORATED·Filed 1995·Granted May 21, 1996·3 cites·1 claims
- 1936USD369652SMiniature pneumatic test plug assemblyCHERNE IND INCORPORATED·Filed 1995·Granted May 7, 1996·3 cites·1 claims
- 2036USD362713SPneumatic plug for pipelinesCHERNE IND INCORPORATED·Filed 1994·Granted Sep 26, 1995·2 cites·1 claims
- 2136USD350704SPneumatic test plugCHERNE IND INCORPORATED·Filed 1993·Granted Sep 20, 1994·2 cites·1 claims
- 2235USD358871SRemote positioning pneumatic plugCHERNE IND INCORPORATED·Filed 1994·Granted May 30, 1995·2 cites·1 claims
- 2329USD378695SPipeline plugCHERNE IND INCORPORATED·Filed 1994·Granted Apr 1, 1997·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →