Robert H. Heil — 14 Patents at 3M

Robert H. Heil has been granted 14 US patents while listed as an inventor at 3M. The first was granted in 1983 and the most recent in August 2016. Robert H. Heil ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Robert H. Heil in Belleville, IL, US.

Patents per Year

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
D765061	Microphone base	—	2016-08-30
8189842	Low handling noise vocal microphone	—	2012-05-29
7308016	System and method for securing signals	—	2007-12-11	$13,753,000
6887553	Roll of longitudinally folded masking material	James F. Pitzen, Jeffrey J. Schwab	2005-05-03	$24,201,000
6120867	Removable tape laminate	Michael D. Hamerski	2000-09-19	$16,737,000
5791586	Masking device hub providing two position tape support	James D. Cayford, Philip V. Sadrakula, Stanley W. Widmer	1998-08-11	$22,489,000
5667626	Masking device hub providing two position tape support	James D. Cayford, Philip V. Sadrakula, Stanley W. Widmer	1997-09-16	$10,843,000
5593771	Barrier laminate and method using a portable carrier for sealing gaps in building construction	Joseph D. Lawless, Scott R. Pribnow, Duncan Russell	1997-01-14	$12,261,000
5374477	Barrier laminate and method for sealing gaps in building construction	Joseph D. Lawless, Scott R. Pribnow, Duncan Russell	1994-12-20	$10,174,000
5269871	Tape applying device	Frederic A. Longworth	1993-12-14	$10,840,000
4990214	Masking device with tape tracking member	Frederic A. Longworth, Allen J. Rivard	1991-02-05	$5,520,000
4981537	Tape laminating device	Frederic A. Longworth	1991-01-01
4915769	Masking machine	Frederic A. Longworth, Allen J. Rivard	1990-04-10	$13,875,000
4413221	Method and circuit for determining battery capacity	Fred W. Benjamin	1983-11-01

Robert H. Heil — 14 Patents

Patents per Year

Issued Patents All Time

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