David E. Call — 17 Patents at IBM

David E. Call has been granted 17 US patents while listed as an inventor at IBM. The first was granted in 1992 and the most recent in August 2025. David E. Call ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list David E. Call in Phoenix, AZ, US.

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12377443	Recovery of higher volume and higher quality recyclables from a mixed stream	Prabhu Soundarrajan, John Joseph Riconosciuto, Peter J. Keller, Zhenni Niu	2025-08-05
11998953	Recovery of higher volume and higher quality recyclables from a mixed stream	Prabhu Soun Dar Rajan, John Joseph Riconosciuto, Peter J. Keller, Zhenni Niu	2024-06-04
10643669	Parallel testing of magnetic recording sliders	Mike X. Wang	2020-05-05	$4,592,000
9454981	Structures and methods for parallel testing of multiple read heads in two dimensional magnetic recording sliders	Takayuki Fukumoto, Norman Macy Tecson Libunao	2016-09-27
8040131	Method for testing the acceptability of a magnetic read sensor	Ciaran Fox, Jih-Shiuan Luo, Robert Langland Smith, Chin-Yu Yeh	2011-10-18	$92,000
7564236	Thermal fly height induced shield instability screening for magnetoresistive heads	Hardayal Singh Gill	2009-07-21	$117,000
5640381	Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC's that supply a plurality of scaled output signals	Stephen J. Hrinya, Jerry E. Hurst, Jr., Glen Alan Jaquette, Anthony Juliana, Jr.	1997-06-17	$15,640,000
5602806	Magneto-optical recording device capable of reducing thermal interference between recording pits	Patrick Clinton Arnett, Blair I. Finkelstein, Glen Alan Jaquette, Ernesto E. Marinero	1997-02-11	$15,155,000
5526329	Calibration of readback threshold in an optical storage device to determine a blank sector	John E. Bish, Glen Alan Jaquette, Judson A. McDowell, Arturo Avila Mojica, Lawrence D. Tipton	1996-06-11	$10,629,000
5450383	Monitoring and adjusting laser write power in an optical disk recorder using pulse-width modulated power level checking signals	Blair I. Finkelstein, Glen Alan Jaquette	1995-09-12	$5,751,000
5430702	Calibration of readback threshold in an optical storage device	John E. Bish, Glen Alan Jaquette, Judson A. McDowell, Arturo Avila Mojica, Lawrence D. Tipton	1995-07-04
5383175	Laser power control with defocusing offset during data recording	Blair I. Finkelstein	1995-01-17	$19,874,000
5309461	Compensated laser drive circuit	Glen Alan Jaquette, Julian Lewkowicz	1994-05-03	$7,556,000
5268893	Write power calibration utilizing least squares fit of read-back signals for moving media memory	Lawrence D. Tipton	1993-12-07	$8,444,000
5216659	Laser power calibration by measuring laser drive current at out of focus and in focus conditions	Julian Lewkowicz	1993-06-01	$16,040,000
5185734	Calibrating and power-protecting laser drive circuits	Julian Lewkowicz	1993-02-09	$9,865,000
5172365	System for predicting laser end-of life from the power vs. current curve of the diode	Blair I. Finkelstein, Catherine S. Singer	1992-12-15	$8,444,000

David E. Call — 17 Patents

Issued Patents All Time

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