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| Number | Title | Issue Date |
| 4308305 | Core steel reinforcement for window guide channels and the like A core steel reinforcement for window guide channels or the like is disclosed made from thin strip steel and having high strength and rigidity. It has marginal portions or areas in the shape of corrugations of inverted substantially V-shaped cross-section... | 12/29/1981 |
| 4276336 | Multi-apertured web with incremental orientation in one or more directions A thermoplastic non-woven net fabric and a method of making the same. The fabric includes a plurality of apertures with the apertures surrounded by axially drawn, biaxially drawn and undrawn areas. In one method, the web is perforated and then drawn by on... | 06/30/1981 |
| 4146666 | Thermally expansible sheet An expansible panel capable of deforming and absorbing stresses caused by thermal expansion and contraction comprising a single sheet formed of a plurality of frusto-pyramids of different sizes, each having a base, a top and depending sides and whose dime... | 03/27/1979 |
| 4143499 | Roofing sheet A corrugated roofing sheet has special elevations formed in the wave crest of the sheet, the elevations being contoured to increase the sheet's rigidity while permitting the elevations to function as a ladder. The elevations provide effective rigidfying w... | 03/13/1979 |
| 4144369 | Composite deck panel A corrugated sheet for use as part of a composite concrete deck comprising parallel spaced crest surfaces connected to parallel spaced soffit surfaces by upstanding connecting web surfaces that converge towards each other as they approach a common crest s... | 03/13/1979 |
| 4133481 | Anti-skid device for vehicles A traction device comprising a mat made of molded thermo-plastic material having a generally rectangular frame, a traction area and an approach area on each side of the traction area. The traction area occupies approximately half of the length of the mat ... | 01/09/1979 |
| 4103058 | Pillowed web of blown microfibers A novel blown microfiber web having a network of compacted high-density regions and pillowed low-density regions exhibits a unique combination of low density and good tensile strength and integrity. Such a web may be collected on a perforated screen so th... | 07/25/1978 |
| 4042740 | Reinforced pillowed microfiber webs Webs of blown microfibers having a network of compacted high-density regions and pillowed low-density regions are reinforced by a mesh of filaments used to collect the web.... | 08/16/1977 |
| 4035536 | Sandwich panel core A core having a repetitive pattern for ribbing comprising triangles and hexagons where each side of any given hexagon is extended pinwheel fashion toward the appropriate side extensions of each of the six adjoining hexagons, all of the hexagons having sid... | 07/12/1977 |
| 4005245 | Tapered plastic preform for telescopic application The present invention relates generally to improvements in plastic preforms adapted for telescopic association with a complementary smooth surfaced mandrel such as is used in conventional plastic blow molding machines. More particularly, the present inven... | 01/25/1977 |
| 3994771 | Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof A wet-laid composite, soft, bulky and absorbent paper structure is prepared from two or more layers of furnish which are preferably comprised of different fiber types. The layers are preferably formed from the deposition of separate streams of dilute fibe... | 11/30/1976 |
| 3944692 | Pressure sensitive materials and methods of making same Pressure sensitive materials and methods of making same, wherein a layer of adhesive material is sandwiched between a printing paper sheet surface and a backing sheet surface which is preferably of high density and coated with an adhesive release agent, p... | 03/16/1976 |
| 3940529 | Non-nested two-ply absorbent fibrous sheet material Disclosed is a non-nested, two-ply, absorbent fibrous sheet material consisting of two webs which each have a plurality of crests and depressions on its surface facing the other web. The crests on each web are positioned between the crests of the other we... | 02/24/1976 |
