Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of sealing interior mine surface with a fire retardant hydrophilic polyurethane foam and resulting product

Method of sealing interior mine surface with a fire retardant hydrophilic polyurethane foam and resulting product

US Patent 4237182 · Granted Dec 2, 1980

Estimated economic value: $7,250,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Ventricular assist device2000
Degradable articles and methods of using such articles as degradable bait1993
Adhesive and resulting nonwoven fabric1983
Sound deadening material1983
Flexible polyurethane foams from polymethylene polyphenyl isocyanate containing 1982
Flow-through dryer and method for rapid drying of porous foams1982
Method of making a fire-retardant product having a foamed lore and a fire-retard1982
Polyurea polyurethane foamed sponge with high wet strength1982
Fire-retardant product and method of making1981
Fire retardant coating system utilizing polyurethane hydrogel1981
Flame-retardant polyurethane foams1980
Dimensionally stable polyurethane foam1980