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Robert W. Shaffer — 37 Patents

ASAir Squared: 18 patents #1 of 12Top 9%

WEWestinghouse Electric: 6 patents #589 of 5,212Top 15%

INIngersoll-Rand: 5 patents #104 of 857Top 15%

TUTuthill: 3 patents #8 of 63Top 15%

PUPuritan-Bennett: 1 patents #65 of 110Top 60%

RSRsa Security: 1 patents #28 of 69Top 45%

Vonore, TN: #1 of 19 inventorsTop 6%

Tennessee: #267 of 20,272 inventorsTop 2%

Overall (All Time): #88,321 of 4,157,543Top 3%

37 Patents All Time

Robert W. Shaffer has been granted 37 US patents while listed as an inventor at Air Squared. The first was granted in 1980 and the most recent in April 2025. Robert W. Shaffer ranks #88,321 of 4,157,543 US inventors in our database (top 2.1%). Patent records list Robert W. Shaffer in Vonore, TN, US.

Patents per Year

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12286817	Retention patio leash for patio furniture	Christie L. Shaffer	2025-04-29
11946271	Umbrella base	Christie L. Shaffer	2024-04-02
11047389	Multi-stage scroll vacuum pumps and related scroll devices	Bryce R. Shaffer	2021-06-29
10774690	Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle	Bryce R. Shaffer	2020-09-15
10683865	Scroll type device incorporating spinning or co-rotating scrolls	Bryce R. Shaffer, Russell Vigil	2020-06-16
10519815	Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump or combined organic rankine and heat pump cycle	Bryce R. Shaffer	2019-12-31
10221852	Multi stage scroll vacuum pumps and related scroll devices	Bryce R. Shaffer	2019-03-05
9885358	Three stage scroll vacuum pump	—	2018-02-06
9784139	Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle	Bryce R. Shaffer	2017-10-10
9074598	Scroll type device including compressor and expander functions in a single scroll plate pair	Bryce R. Shaffer	2015-07-07
9028230	Three stage scroll vacuum pump	—	2015-05-12
8668479	Semi-hermetic scroll compressors, vacuum pumps, and expanders	—	2014-03-11
8523544	Three stage scroll vacuum pump	—	2013-09-03
7942655	Advanced scroll compressor, vacuum pump, and expander	—	2011-05-17
D534448	Authentication device	Edward W. Vipond	2007-01-02
6511308	Scroll vacuum pump with improved performance	—	2003-01-28
6439864	Two stage scroll vacuum pump with improved pressure ratio and performance	—	2002-08-27
6129530	Scroll compressor with a two-piece idler shaft and two piece scroll plates	—	2000-10-10
6050792	Multi-stage scroll compressor	—	2000-04-18
5759020	Scroll compressor having tip seals and idler crank assemblies	—	1998-06-02
5752816	Scroll fluid displacement apparatus with improved sealing means	—	1998-05-19
D384449	Blower outlet fitting	Edward W. Vipond	1997-09-30
5632612	Scroll compressor having a tip seal	—	1997-05-27
5597290	Multi-component fan assembly	Edward W. Vipond	1997-01-28
5466134	Scroll compressor having idler cranks and strengthening and heat dissipating ribs	Kyle Adriance, Charles D. Kimbro	1995-11-14