DJ

Donald L. Stewart, Jr.

AA Aluminum Company Of America: 7 patents #69 of 1,017Top 7%
AL Alcoa: 2 patents #200 of 632Top 35%
AI Alcoa Closure Systems International: 1 patents #39 of 70Top 60%
📍 Greensburg, PA: #32 of 371 inventorsTop 9%
🗺 Pennsylvania: #7,358 of 74,527 inventorsTop 10%
Overall (All Time): #465,271 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
8917754 Aluminum melting apparatus David H. DeYoung, Edward Williams 2014-12-23
7556766 Controlled free vortex scrap ingester and molten metal pump Ho Yu 2009-07-07
6347545 Closure pressure testing apparatus and method for testing closures Kevin F. Osborn, Thomas J. McCandless 2002-02-19
5227143 Process for the removal of salts from aluminum dross Jan H. L. VanLinden 1993-07-13
5198200 Process for the recovery of values from secondary aluminum dross Daniel Yerushalmi, Gerald E. Carkin, Jan H. L. van Linden 1993-03-30
5057194 Salt-based melting process Jan H. L. van Linden, Alfred F. LaCamera, Thomas V. Pierce, James O. Parkhill, John M. Urbanic +1 more 1991-10-15
4761207 Continuous salt-based melting process Jan H. L. VanLinden 1988-08-02
4758316 Aluminum-lithium scrap recovery Jan H. L. VanLinden 1988-07-19
4490049 Mixing arrangement John Sanders 1984-12-25
4385964 Method for preventing the undesirable condensation of aluminum chloride in a fractional distillation column Roger C. Johnson, Utah Tsao, David A. Wohleber 1983-05-31
4349420 Fractional distillation process for the production of aluminum chloride 1982-09-14