Joplin, Missouri
United States
8
2025-03-06
The entities that hold a legal rights for patent applications filed by inventor Humphreys David:
David Humphreys from Joplin, US has applied for patents for these inventions. The list has both pending applications and granted patents:
ASPHALT-BASED NANO-COMPOSITE ROOFING PRODUCT
#2 | 2019-12-12Lightweight roofing shingle and method for making same
#3 | 2019-09-05Applying a release material to a shingle during manufacturing
#4 | 2019-08-08POLYMAT SHINGLE
#5 | 2018-10-11Liquid release agent and associated methods of application
#6 | 2018-10-04Curtain die for applying a liquid release agent to a shingle substrate
#7 | 2015-12-24Lightweight roofing shingle and method for making same
#8 | 2015-08-27Liquid release agent and associated methods of application
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