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William E. Gifford — 14 Patents

General Motors: 14 patents #1,039 of 18,328Top 6%
Spencerport, NY: #31 of 242 inventorsTop 15%
New York: #10,566 of 115,490 inventorsTop 10%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
William E. Gifford has been granted 14 US patents while listed as an inventor at General Motors. The first was granted in 1980 and the most recent in March 1994. William E. Gifford ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list William E. Gifford in Spencerport, NY, US.

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5289811 Purge control device Charles H. Covert, Joseph Fornuto, Otto Muller-Girard, Jr., Gordon R. Paddock 1994-03-01
RE34518 Vacuum actuated tank vapor vent valve Charles H. Covert, Kenneth W. Turner, Carl H. Sherwood, Richard W. Wagner 1994-01-25
5253629 Flow sensor for evaporative control system Joseph Fornuto, Karen M. Meyer, Otto Muller-Girard, Jr., Harold Milton Haskew 1993-10-19
5119791 Vapor storage canister with liquid trap Otto M. Girard, Jr., Charles H. Covert, Samuel Yu, Gordon R. Paddock, Richard H. Simons, Jr. 1992-06-09
5014742 Vacuum actuated tank vapor vent valve Charles H. Covert, Kenneth W. Turner, Carl H. Sherwood, Richard W. Wagner 1991-05-14
4917157 Vehicle tank vapor vent valve assembly Carl H. Sherwood, Charles H. Covert, Kenneth W. Turner 1990-04-17
4893643 Tank vapor vent valve assembly with improved overfill protection Carl H. Sherwood, Charles H. Covert, Kenenth W. Turner 1990-01-16
4732588 Canister using thermoelectric cooler Charles H. Covert, Edwin C. Storey 1988-03-22
4724861 Fuel tank venting Charles H. Covert, Joseph Fornuto, Roy A. Giacomazzi, Carl H. Sherwood 1988-02-16
4714485 Fuel vapor storage canister Charles H. Covert, Craig G. Kemler, Gordon R. Paddock 1987-12-22
4706708 Fuel tank venting Joseph Fornuto, Daniel Nolan, Carl H. Sherwood 1987-11-17
4683862 Fuel vapor storage canister Joseph Fornuto, Karen M. Meyer 1987-08-04
4359031 Engine air flow responsive control Donald D. Stoltman 1982-11-16 $5,672,000
4203401 Evaporative emissions canister Charles A. Kingsley, James Spaulding 1980-05-20 $7,588,000

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