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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 7905671 | Ink backflow preventive for water-based ball-point pens The ink backflow preventive of the present invention contains at least refractory and/or involatile organic liquid substances and gelling agents, wherein the oil separation degree under the specific condition is prepared to be 1 to 15 %, in which as at least said ge... | 03/15/2011 |
| 7637680 | Coating tool A coating tool that includes an ink containment tube, an oily ink and a backflow inhibiting material. The ink is in contact with the inhibiting material. The ink containment tube has a boundary which is in contact with the oily ink and the backflow inhibiting materi... | 12/29/2009 |
| 7390138 | Ballpoint pen A ballpoint pen including: an ink accommodation cylinder; a ballpoint pen tip in which a ball is rotatably held, the pen tip being attached to a tip end of an ink-accommodation cylinder directly or through a tip holder; and ballpoint oil-based ink comprising at leas... | 06/24/2008 |
| 7311459 | Follower for non-aqueous ball point pen and non-aqueous ball point pen A follower for a nonaqueous ballpoint pen, comprising at least one poly-α-olefin which is a synthetic oil having a viscosity of 200 mPa·s or more at 40° C., wherein the total amount of poly-α-olefins is 80 mass % or more of all components, the viscosity at 40° ... | 12/25/2007 |
| 7179006 | Ink follower An ink follower which has stable followability regardless of a pen body specification, a flow rate for writing and a writing speed and does not cause back leaking of the ink originating in shortage in the ink follower in the middle of writing and scattering of the i... | 02/20/2007 |
| 7179005 | Ink follower for water-based ink ballpoint pen An ink follower for a ballpoint pen using a water-based ink in which a value of the test for oil separation (60° C., 24 hours) according to JIS K 2220-5.7-1993 is 0.5 to 12% and which has a viscoelasticity predominant in an elastic response or a value of tan δ of ... | 02/20/2007 |
| 7168876 | Writing instrument for water-metachromatic members with detachable pen point holder A writing instrument for a water-metachromatic member has a cylindrical container capable of holding water, formed with an opening at a tip end thereof to communicate the interior of the container with the exterior thereof, a hollow cylindrical holder which directly... | 01/30/2007 |
| 7128491 | Composite writing instrument In a composite writing instrument having mounted therein a plurality of writing devices including at least one ball-point pen refill equipped with a tip of the ball-point pen at a top end and an ink reservoir section at a rear end so that writing tip portions may be... | 10/31/2006 |
| 7094278 | Multi-color writing inks The disclosure is generally related to a multi-color writing ink and, more particularly, to a multi-color writing instrument comprising a mixture of a first ink composition and a second ink composition, wherein the first and second ink compositions are immiscible wi... | 08/22/2006 |
| 7083665 | Highlightable marking composition, method of highlighting the same, highlightable marking composition kit, and highlighted marking composition complex A highlightable ink including a colored pigment and an eradicable colorant; a kit including the highlightable ink and an eradicator solution; an ink complex including a colorless or substantially colorless eradicable dye selected from the group consisting of diarylm... | 08/01/2006 |
| 7071245 | Oil-based ballpoint pen ink composition and oil-based ballpoint pen An oil-based ballpoint pen ink composition comprising a) a colorant, b) a solvent containing one or more solvents having the following chemical structural formula (1) where R1, R2 and R... | 07/04/2006 |
| 7056052 | Ink reservoir for writing instrument In order to provide an ink reservoir for a writing instrument which has satisfactory permeation resistance and moisture-absorption resistance against permeation of a solvent and absorption of moisture and which is excellent in a storing property of the ink with the ... | 06/06/2006 |
| 7037019 | Ink-storing member for writing instrument An ink-storing member for a writing instrument which can inhibit deterioration in the ink caused by permeation of oxygen and nitrogen contained in air, inhibit leaking of the ink and generation of bubbles, enhance discharge stability of the ink, improve fragrance re... | 05/02/2006 |
| 6953345 | Water-metachromatic cloth sheet, toy set using the same, and writing instrument for water-metachromatic members A water-metachromatic sheet has a support with a porous layer containing a binder resin with dispersed fine-particle silicic acid. The sheet is capable of rendering different transparency between water absorbed and unabsorbed states. The support is a cloth having a ... | 10/11/2005 |
| 6926458 | Ball-point pen refill For producing a pressurized ball-point pen refill the ball-point pen refill includes a tip, an ink storage tube and a tail plug, wherein ink is filled in the space of the ink storage tube relatively near to the tip, and a pressuring gas is filled in the space of the... | 08/09/2005 |
| 6905539 | Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex A shear-thinning eradicable ink including water, a dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, methine dyes, and a solvent, wherein the ink has a shear-thinning index in the range of about 0.35 to about 1.0; a kit... | 06/14/2005 |
| 6887921 | Ink follower composition for writing instruments, and process for its production An ink follower composition to be provided at the rear end of an ink held directly in an ink container of a writing instrument and capable of going forward with consumption of the ink. The composition comprises at least one selected from an ethylene-α-olefin co-oli... | 05/03/2005 |
| 6805511 | Ball point pen Ink and an ink follower are reserved in an ink tube. An elastic member urges a ball forward. When an outflow of ink is measured at intervals of a writing distance of 100 m, the value of outflow of ink per writing distance of 100 m until a measurement time just befor... | 10/19/2004 |
| 6729787 | Applicator using pressurized air to aid in dispensing liquid An applicator has a tubular body containing a liquid to be dispensed. A non-return device is movably disposed in the tubular body rearwardly of and in contact with the liquid for preventing backflow of the liquid. A manually-displaceable piston member is displaceabl... | 05/04/2004 |
| 6655867 | Oily ink for writing instrument A writing instrument has an ink containment tube and a pen tip equipped at one end of the ink containment tube with an oily ink contained in the ink containment tube. The oily ink shows pseudo-plasticity fluidity and comprises a colorant, a resin, an orga... | 12/02/2003 |
| 6530708 | Ink follower composition for oil-based ballpoint pens An ink follower composition for oil-based ballpoint pens, comprising at least one organic solvent selected from the group consisting of a sparingly volatile organic solvent and a non-volatile organic solvent, a gelling agent comprising inorganic fine part... | 03/11/2003 |
| 6521035 | Ink follow up composition for water-base ball pen The present invention relates to an ink follower for a water-base ballpoint pen, which has strong pseudoplasticity by causing HO(C2 H4 O)m.(C3 H6 O)n H to interfere with hydrophobic silica ... | 02/18/2003 |
| 6518329 | Liquid ink A non-erasable liquid ink for a marking instrument including a colorant and a solvent and having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps. Also disclosed is a marking instrument filled with an ink of such a viscosi... | 02/11/2003 |
| 6491466 | Applicator for fluid An applicator includes a reservoir charged with fluid. The reservoir has a discharge-controlling mechanism at one end for applying the fluid. The fluid contains at least one organic solvent, such as mythylcyclohexane, and is charged with a scarcely volati... | 12/10/2002 |
| 6478496 | Ink follower for writing tool An ink follower for a writing tool arranged in close contact with an ink surface of a terminal portion of an ink reservoir opposite to a writing tip portion comprises a swollen gel formed from an oil-absorbable resin, a base oil of polybutene, and an alky... | 11/12/2002 |
| 6454481 | Ink follower in conjunction with ink in a writing instrument and writing instrument containing the same An ink follower for a writing tool comprises a swollen gel formed from an oil-absorbable resin and a base oil, i.e., a hardly volatile liquid and/or a nonvolatile liquid. The ink follower is arranged in contact with the ink surface of a writing tool such ... | 09/24/2002 |
| 6450719 | Ballpoint pen ink, pen, and refill A suspension of a pigment in a grease is used as a ballpoint penink.... | 09/17/2002 |
| 6443647 | Ink follower piston for a ball-point pen, and a method of manufacturing the same A follower piston for a ball-point pen, the piston including an element in the form of a stable gel whose hardness measured by cone penetration lies in the range 100×10-1 mm to 400×10-1 mm, and a method for manufacturing the elemen... | 09/03/2002 |
| 6406204 | Oily ink for writing instrument An oily ink for writing instruments comprising e. colorant, f. resin, g. an organic solvent and h. a gelling agent, wherein the said gelling agent comprises a soluble gelling agent with the solubility of from about 0.1 to about 20% by weight at a temperature of ... | 06/18/2002 |
| 6302609 | Ballpoint pen refill A ballpoint pen refill has an ink-accommodating tube (1) containing an ink (6) having a thixotropic property and a greaselike ink follower (7) capable of moving together with the ink (6) as the ink (6) is consumed so as to be contiguous with the rear end ... | 10/16/2001 |
| 6267523 | Ink pen refill with diversely colored gel ink layers and method of manufacture An ink pen refill consists of a single writing point connected to an elongated barrel in which gel ink is stored in distinctly colored layers. At the proximal end of the barrel, just behind the most proximal color band of ink, a quantity of grease is inse... | 07/31/2001 |
| 6227738 | Method of manufacturing ink follower for water-base ballpoint pens Lot-to-lot or time-dependent instability in quality of the known ink follower for water-base ballpoint pens is overcome. Particulate silica, or organic-treated clay is kneaded as thickener with base oil to prepare gel matter. The gel matter is pressurized... | 05/08/2001 |
| 6203228 | Writing implement A writing implement comprising a dispensing device for writing liquid at the front end of the implement and a liquid reservoir for holding the writing liquid which is at least partly transparent at the rear end of the instrument, the improvement comprisin... | 03/20/2001 |
| 6200053 | Ink follower composition for ballpoint pen and ballpoint pen using the same An ink follower composition for ballpoint pens which comprises (1) a hardly volatile liquid and (2) expansible synthetic mica having a quaternary ammonium ion introduced therein or an ink follower composition for ballpoint pens which comprises (1) a hardl... | 03/13/2001 |
| 6132124 | Ink follower for aqueous ballpoint pen using gel-like material and solid piece The present invention provides an ink follower for an aqueous ballpoint pen having an ink reservoir for directly preserving an ink, and this ink follower comprises at least a gel-like material having a predominantly viscous response and comprising a less ... | 10/17/2000 |
| 6075070 | Marking instrument including liquid ink A marking instrument includes a non-erasable ink including a colorant and a solvent having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps.... | 06/13/2000 |
| 6012864 | Ink follower composition for ballpoint pen and ballpoint pen using the same An ink follower composition for ballpoint pens which comprises a hardly volatile liquid and aluminum silicate added therein. The ink follower composition for ballpoint pens of the present invention has very little temperature dependence of viscosity, unde... | 01/11/2000 |
| 5909975 | Multiplex writing implement The multiplex writing implement includes: a cylindrical portion formed in the rear of the elliptical cylinder portion of the middle barrel; a rotary shaft which is disposed in the bore of the cylindrical portion so as to rotate in a range of about 180° r... | 06/08/1999 |
| 5874488 | Ink follower compositions Ink follower compositions include a non-polar liquid, a thickener and a polar additive. The polar additive is preferably selected from the group consisting of non-ionic surfactants, e.g., ethoxylated nonylphenols, and low molecular weight alcohols.... | 02/23/1999 |
| 5865553 | Liquid-ink writing instrument having a reservoir fitted with a system to prevent loss of priming A writing instrument is provided, including a writing tip, a reservoir containing a liquid ink, and a capillary transfer rod extending from a first end to a second end of the reservoir. The capillary transfer rod transfers the liquid ink from the reservoi... | 02/02/1999 |
