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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 5190615 | Low brightness functional pigment from process by-product A low brightness pigment and method is provided from a heretofore rejected waste kaolin stream. Kaolin processing rejects are high in iron-stained TiO2. After separating the stained TiO2 from the high brightness kaolin and concentrat... | 03/02/1993 |
| 5154767 | Low brightness functional pigment from process by-product A low brightness pigment and method is provided from a heretofore rejected waste kaolin stream. Kaolin processing rejects are high in iron-stained TiO2. After separating the stained TiO2 from the high brightness kaolin and concentrat... | 10/13/1992 |
| 5147458 | Structured pigment from high TiO2 /Fe2 O3 kaolinite reject material A low brightness pigment and method is provided from a heretofore rejected waste kaolin stream. Kaolin processing rejects are high in iron-stained TiO2. After separating the stained TiO2 from the high brightness kaolin and concentrat... | 09/15/1992 |
| 5123829 | Rod guide remover A rod guide remover is provided for splitting rod guides away from a sucker rod without risk of damage to the rod. A set of opposing blades are used which are kept a selected distance apart by stop members that abruptly contact a set of rod supports for p... | 06/23/1992 |
| 5115863 | Low turbulence rod guide A rod guide or centralizer for a reciprocating rod string which presents minimal resistance to the axial flow of well fluids. The guide offers minimum cross section and turbulence without loss of erodible volume. The guide may be molded on or fitted with ... | 05/26/1992 |
| 5102465 | Filler for polyester molding compound and method An improved dry ground calcium carbonate filler is provided which is less sensitive to variations in relative humidity and does not promote premature viscosity increase in polyester molding compound. This filler is dry ground from a Caribbean micritic lim... | 04/07/1992 |
| 5028079 | Non-crushing wellhead An improved slip suspension wellhead is disclosed for suspending a selected tubular member inside another without crushing. An inclined support surface is provided with a second support surface which may contact a portion of the slip assembly to halt axia... | 07/02/1991 |
| 5015295 | Filler for polyester molding compound and method An improved dry ground calcium carbonate filler is provided which is less sensitive to variations in relative humidity and does not promote premature viscosity increase in polyester molding compound. This filler is dry ground from a Caribbean micritic lim... | 05/14/1991 |
| 4879912 | Unitized instrument manifold There is disclosed a unitized instrument manifold which creates a double block and bleed valving arrangement for use with a flow recording or measuring device. The bleed valve assembly permits venting of a first channel to the outside while in the open po... | 11/14/1989 |
| 4877386 | Automated sucker rod cleaning apparatus An automated apparatus for molding rod guides directly onto oilfield sucker rods including an apparatus for cleaning a short pre-determined section of the rod prior to the rod receiving a molded rod guide. The rod cleaning apparatus comprises a substantia... | 10/31/1989 |
| 4876291 | Mineral filler fire retardant composition and method An improved mineral filler fire retardant composition and method are provided wherein the filler is surface treated with a polyfunctional isocyanate. This surface treatment reacts to form a polymeric coating thereby reducing both the free moisture and sol... | 10/24/1989 |
