Inventor · disambiguated record
Donald L. Chapman
Also filed as: CHAPMAN DONALD L
12 granted patents·727 citations·filing 1974–1993
94Inventor score
Top patents by PatentIndex Score
12 records- 0197US4349220ARaintight wirewaySQUARE D CO·Filed 1980·Granted Sep 14, 1982·163 cites·19 claims
- 0294US5023396APop-up service fittingSQUARE D CO·Filed 1989·Granted Jun 11, 1991·149 cites·16 claims
- 0391US5024251ALay-in wireway assemblySQUARE D CO·Filed 1990·Granted Jun 18, 1991·106 cites·12 claims
- 0491US4272643AFire resistant fittingSQUARE D CO·Filed 1978·Granted Jun 9, 1981·74 cites·10 claims
- 0590US4270318AFire resistant fitting floor holesSQUARE D CO·Filed 1978·Granted Jun 2, 1981·63 cites·11 claims
- 0678US5111538AKnockdown portable hotwater shower and shower head thereforCHAPMAN DONALD L·Filed 1990·Granted May 12, 1992·46 cites·23 claims
- 0770US4931597AJunction boxesSQUARE D CO·Filed 1988·Granted Jun 5, 1990·32 cites·26 claims
- 0866US5125199AFloor duct with integral interlockSQUARE D CO·Filed 1989·Granted Jun 30, 1992·26 cites·10 claims
- 0963US4899506ALarge capacity electrical service fitting for concrete floorsSQUARE D CO·Filed 1989·Granted Feb 13, 1990·25 cites·24 claims
- 1055US5415557ABusway tap off base assembly for preventing the ingress of dust and liquidsSQUARE D CO·Filed 1993·Granted May 16, 1995·23 cites·8 claims
- 1146US3937767ACarburetorCHAPMAN DONALD L·Filed 1974·Granted Feb 10, 1976·9 cites·4 claims
- 1244US4922672ASnap-on underfloor presetSQUARE D CO·Filed 1989·Granted May 8, 1990·11 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →