Inventor · disambiguated record
William S. Stumpf
Also filed as: STUMPF WILLIAM · STUMPF WILLIAM S
17 granted patents·510 citations·filing 1981–2001
95Inventor score
Files withNORTHFIELD METAL PRODUCTS LTD7DOERNER PROD LTD4HAUSERMAN LTD2FAULTLESS DOERNER MFG1HAUSERMAN INC1
Top patents by PatentIndex Score
17 records- 0194US4771583ASpace divider systemHAUSERMAN INC·Filed 1985·Granted Sep 20, 1988·118 cites·41 claims
- 0292US5484187AChair armrest adjustment mechanismDOERNER PROD LTD·Filed 1994·Granted Jan 16, 1996·104 cites·15 claims
- 0388USD411396SChair armrestNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Jun 22, 1999·34 cites·1 claims
- 0476US5944387AAdjustment mechanism for chairsNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Aug 31, 1999·51 cites·14 claims
- 0572USD407246SChair armrestNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Mar 30, 1999·16 cites·1 claims
- 0667US6540296B1Chair back height-adjustment mechanismRAM MACHINES 1990 LTD·Filed 2001·Granted Apr 1, 2003·28 cites·10 claims
- 0760US4446663AAcoustical padHAUSERMAN LTD·Filed 1981·Granted May 8, 1984·22 cites·31 claims
- 0857USD411929SChair armrest componentNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Jul 13, 1999·9 cites·1 claims
- 0957US4404776AHanging components for space divider systemHAUSERMAN LTD·Filed 1981·Granted Sep 20, 1983·19 cites·26 claims
- 1055US5356200AUnitary brake for a chair tilt mechanismDOERNER PROD LTD·Filed 1992·Granted Oct 18, 1994·27 cites·25 claims
- 1151US5405189AChair seat back height adjustment mechanismDOERNER PROD LTD·Filed 1993·Granted Apr 11, 1995·20 cites·18 claims
- 1249USD397889SChair arm restNORTHFIELD METAL PRODUCTS LTD·Filed 1997·Granted Sep 8, 1998·6 cites·1 claims
- 1345US5997087AChair tilt mechanismNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Dec 7, 1999·17 cites·17 claims
- 1442US6045187AChair seat height adjustment mechanismNORTHFIELD METAL PRODUCTS LTD·Filed 1998·Granted Apr 4, 2000·14 cites·11 claims
- 1536US5382077AHeight adjustment mechanism for a chair seat backDOERNER PROD LTD·Filed 1992·Granted Jan 17, 1995·12 cites·2 claims
- 1632US6491344B1Chair adjustment mechanismLEGGETT & PLATT LTD·Filed 1999·Granted Dec 10, 2002·7 cites·16 claims
- 1732US5152580AHandle assembly for chair control mechanismFAULTLESS DOERNER MFG·Filed 1991·Granted Oct 6, 1992·6 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when William S. Stumpf 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 →