Inventor · disambiguated record
Fred S. Sperling
Also filed as: SPERLING FRED S
9 granted patents·4 pending applications·102 citations·filing 2002–2024
86Inventor score
Top patents by PatentIndex Score
13 records- 0193US6622849B1Hopper door assembly and method for feeding bulk metal objects from a hopperSPERLING RAILWAY SERVICES INC·Filed 2002·Granted Sep 23, 2003·62 cites·20 claims
- 0289US8220397B2Method and apparatus for retrieving and placing tie platesSPERLING FRED S·Filed 2010·Granted Jul 17, 2012·12 cites·28 claims
- 0384US11015299B2Method and apparatus for retrieving and placing tie platesSPERLING RAILWAY SERVICES INC·Filed 2018·Granted May 25, 2021·3 cites·16 claims
- 0482US7926426B2Railway scrap recovery vehicleSPERLING RAILWAY SERVICES INC·Filed 2008·Granted Apr 19, 2011·8 cites·44 claims
- 0579US10982394B2Method and apparatus for retrieving and placing tie platesSPERLING RAILWAY SERVICES INC·Filed 2018·Granted Apr 20, 2021·2 cites·15 claims
- 0678US11015298B2Method and apparatus for retrieving and placing tie platesSPERLING RAILWAY SERVICES INC·Filed 2018·Granted May 25, 2021·2 cites·18 claims
- 0775US11982057B1Method and apparatus for retrieving and placing tie platesSPERLING RAILWAY SERVICES INC·Filed 2020·Granted May 14, 2024·1 cites·20 claims
- 0862US7244089B2Device for removing metallic objects from a railway bedSPERLING RAILWAY SERVICES INC·Filed 2004·Granted Jul 17, 2007·12 cites·33 claims
- 0957US2011132226A1Method and apparatus for cutting railroad railsSPERLING RAILWAY SERVICES INC·Filed 2009·Application pending·0 cites
- 1055US2025354339A1Rail heater and method of useSPERLING RAILWAY SERVICES INC·Filed 2024·Application pending·0 cites
- 1154US2025290254A1Rail grinding machine and method thereofSPERLING RAILWAY SERVICES INC·Filed 2024·Application pending·0 cites
- 1254US2025290255A1Rail grinding machine and method thereofSPERLING RAILWAY SERVICES INC·Filed 2024·Application pending·0 cites
- 1353US12084816B2Method and apparatus for retrieving and placing tie platesSPERLING RAILWAY SERVICES INC·Filed 2020·Granted Sep 10, 2024·0 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when Fred S. Sperling files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →