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| Number | Title | Issue Date |
| 5501871 | Thermal insulating material and method of manufacturing same Hollow microspheres produced by the present method each have a hollow interior evacuated of gases to a predetermined pressure. A reflective material layer coats the exterior of each microsphere and, optionally, an outer layer of a protective material is a... | 03/26/1996 |
| 5500287 | Thermal insulating material and method of manufacturing same Hollow microspheres produced by the present method each have a hollow interior evacuated of gases to a predetermined pressure. A reflective material layer coats the exterior of each microsphere and, optionally, an outer layer of a protective material is a... | 03/19/1996 |
