Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5643677 | Aminoplast/polyurethane wear layer for PVC support surface | Joseph P. Feifer, Claude R.. Rupp, William T. Sigman | 1997-07-01 | $11,712,000 |
| 4855165 | Method for making stain and scratch resistant resilient surface coverings | Nicholas C. Bolgiano, Raymond S. Hudson, William T. Sigman | 1989-08-08 | $13,961,000 |
| 4781987 | Stain and scratch resistant resilient surface coverings | Nicholas C. Bolgiano, Raymond S. Hudson, William T. Sigman | 1988-11-01 | $12,965,000 |