Patrick J. Spellman has been granted 7 US patents while listed as an inventor at Rayovac . The first was granted in 1995 and the most recent in March 2022. Patrick J. Spellman ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Patrick J. Spellman in Middleton, WI, US.
Patents per Year Patents granted per year, 1995 to 2022 Bar chart with a peak of 1 patents in 1995. peak 1 1995: 1 patents 1995 1997: 1 patents 1997 1998: 1 patents 1998 1999: 1 patents 1999 2000: 1 patents 2000 2003: 1 patents 2003 2022: 1 patents 2022
Issued Patents All Time
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Showing 1–7 of 7 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11279276 Boat towing auxiliary light with shaft, power source, and brace Thomas Bonner 2022-03-22
6653016 Extended temperature operating range electrochemical cells Cecilia Maske , Gerald Sanden , Zhihong Jin , Janna L. Rose 2003-11-25
$4,316,000
6087030 Electrochemical cell anode and high discharge rate electrochemical cell employing same Randall L. Collien , Robert B. Dopp , John Edward Oltman , John David Burns , Joseph L. Passaniti +1 more 2000-07-11
$8,838,000
5932367 Low mercury, high discharge rate electrochemical cell Randall L. Collien , Robert B. Dopp , John Edward Oltman , John David Burns , Joseph L. Passaniti +1 more 1999-08-03
$6,250,000
5721065 Low mercury, high discharge rate electrochemical cell Randall L. Collien , Robert B. Dopp , John Edward Oltman , John David Burns , Joseph L. Passaniti +1 more 1998-02-24
$2,331,000
5606238 Discriminating battery charging system El-Sayed Megahed , Karl E. Anderson , Bryan D. Jaedike 1997-02-25
5443924 Discriminating charger and compatible battery — 1995-08-22