Michael T. Heffelfinger has been granted 13 US patents while listed as an inventor at ExxonMobil . The first was granted in 1985 and the most recent in December 2005. Michael T. Heffelfinger ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Michael T. Heffelfinger in Allentown, PA, US.
Patents per Year Patents granted per year, 1985 to 2005 Bar chart with a peak of 3 patents in 2000. peak 3 1985: 1 patents 1985 1990: 1 patents 1990 1996: 1 patents 1996 1999: 2 patents 1999 2000: 3 patents 2000 2001: 2 patents 2001 2003: 1 patents 2003 2004: 1 patents 2004 2005: 1 patents 2005
Issued Patents All Time
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Showing 1–13 of 13 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6979495 Multi-layer film with core layer of syndiotactic polypropylene Jay K. Keung , Robert G. Peet 2005-12-27
$511,062,000
6794024 Styrenic block copolymer breathable elastomeric films Glynis Allicia Walton , Richard Shane , Glen Thomas Mildenhall 2004-09-21
$26,949,000
6582810 One-step method of producing an elastic, breathable film structure — 2003-06-24
$17,119,000
6329048 Multi-layer barrier film Riccardo Balloni , Mark Lockhart , Robert G. Peet , Eileen A. Stetter 2001-12-11
6221464 Flanged insulation assembly and method of making Bharat Patel , Steven G. Schmitt , Rebecca L. Thomas-Dutiel , Weigang Qi 2001-04-24
6159612 Multi-layer films with syndiotactic barrier layer containing a wax Shaw-Chang Chu , Jay K. Keung , Robert G. Peet 2000-12-12
6083603 Flanged insulation assembly and method of making Bharat Patel , Steven G. Schmitt , Rebecca L. Thomas-Dutiel , Weigang Qi 2000-07-04
6033771 WVTR film using wax in combination with a cavitated tie layer — 2000-03-07
5987833 Vacuum packaged batt Roy E. Shaffer 1999-11-23
$4,331,000
5981037 Patterned bonding of encapsulation material to an insulation assembly Bharat Patel , Steven G. Schmitt , Rebecca L. Thomas-Dutiel , Weigang Qi 1999-11-09
$2,316,000
5500282 High moisture barrier OPP film containing high crystallinity polypropylene and terpene polymer Jay K. Keung , Robert G. Peet 1996-03-19
$39,344,000
4931327 White opaque opp film for tamper evident package Leland L. Liu , Donald G. Whyman 1990-06-05
$28,704,000
4529577 Oxygen/nitrogen production with molten alkali salts Michael S. Chen 1985-07-16
$1,404,000
