Henry Sperber — 20 Patents at Certainteed

Henry Sperber has been granted 20 US patents while listed as an inventor at Certainteed. The first was granted in 1980 and the most recent in November 2004. Henry Sperber ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Henry Sperber in Englewood, CO, US.

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #	Title	Co-Inventors	Date
6820819	Controlling insulation density	—	2004-11-23
6796748	Independently controllable multi-output insulation blowing machine	—	2004-09-28
6796457	Material feeder	—	2004-09-28
6584749	Insulating a building using insulating particles with foam and a web	—	2003-07-01
6316510	Foamable binder composition and methods for producing the same	—	2001-11-13
6231961	Layered structures comprising particles, a dry binder and a foamable substance	—	2001-05-15
5819496	Containing insulation using a barrier assembly that includes a substantially air impermeable layer	—	1998-10-13
5647696	Loose material combining and depositing apparatus	—	1997-07-15
5421922	Method for applying a foamed fiber insulation	—	1995-06-06
5393794	Insulation material and method using fly ash	—	1995-02-28
5389167	Method for insulating a cavity	—	1995-02-14
5287674	Method and apparatus for containing insulation using a barrier assembly	—	1994-02-22
5131590	Fibrous sprayed insulation having homogeneous density	—	1992-07-21
4978252	Material feeding apparatus using pressurized air	—	1990-12-18
4768710	Fibrous blown-in insulation having homogenous density	—	1988-09-06
4712347	Method and apparatus for containing insulation using netting	—	1987-12-15
4648920	Process for manufacturing batt-type insulation from loose fibrous particles	—	1987-03-10
4530468	Reduced fiber insulation nozzle	—	1985-07-23
4487365	Reduced fiber insulation nozzle	—	1984-12-11
D254618	Insulation application unit	—	1980-04-01

Henry Sperber — 20 Patents

Issued Patents All Time

Patent Widget