David T. Ask — 11 Patents at 3M

David T. Ask has been granted 11 US patents while listed as an inventor at 3M. The first was granted in 1987 and the most recent in July 2025. David T. Ask ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list David T. Ask in Hendersonville, TN, US.

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
D1083284	Lock box	—	2025-07-08
12111485	Textured coating for optical products	Thomas J. Ludemann, Jeffrey W. Hagen, Kristy A. Gillette, Eric D. Shockey	2024-10-08	$68,207,000
10845509	Low sparkle matte coats and methods of making	Thomas J. Ludemann	2020-11-24	$56,473,000
10732331	Low sparkle matte coats and methods of making	Thomas J. Ludemann	2020-08-04	$33,653,000
7018757	Photoconductor materials based on complex of charge generating material	Jiayi Zhu, Zbigniew Tokarski, James A. Baker, Ronald J. Moudry, Nusrallah Jubran +1 more	2006-03-28
6869741	Electrophotographic photoreceptors with novel overcoats	Jiayi Zhu, Zbigniew Tokarski, Ronald J. Moudry, Kristine A. Fordahl, Jonas Sidaravicius +3 more	2005-03-22
6815132	Photoconductor materials based on new phase of titanyl phthalocyanine	Jiayi Zhu, Zbigniew Tokarski, James A. Baker, Ronald J. Moudry, Nusrallah Jubran +1 more	2004-11-09
5464737	Post-processing stabilizers for photothermographic articles	Kumars Sakizadeh, John T. Blair	1995-11-07	$6,600,000
5369000	Post-processing stabilizers for photothermographic articles	Kumars Sakizadeh, John T. Blair	1994-11-29	$5,298,000
4988612	Resistively heatable photothermographic element	Gary E. LaBelle	1991-01-29	$3,001,000
4639412	Resistively heated photothermographic media on vesicular substrate	Gary E. LaBelle	1987-01-27	$10,637,000

David T. Ask — 11 Patents

Issued Patents All Time

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