Yutaka L Shimoji

US Patent:

6440122, Aug 27, 2002

Filed:

Dec 30, 1999

Appl. No.:

09/475851

Inventors:

Yutaka Shimoji - Clearwater FL 33764

International Classification:

A61B 1818

US Classification:

606 2, 606 3

Abstract:

A controlled process for thoroughly curing light-activated surgical and dental composites is presented using a hand-held, self-contained, cordless, rechargeable laser instrument. At least one micro laser generates focused single wavelength blue laser light of at most 480 nm, and enhances efficiency and control of curing. The process of use includes switching from stand-by mode to curing mode of operation of the instrument to save time during surgical and dental procedures.

US Patent:

6650670, Nov 18, 2003

Filed:

Jul 13, 2000

Appl. No.:

09/615265

Inventors:

Yutaka Shimoji - Clearwater FL 33764

International Classification:

H01S 314

US Classification:

372 39, 372 41

Abstract:

Composite lasers made of contiguous layers of pure and doped polycrystalline ceramics are introduced. The close thermal contact between such layers of the same ceramic allows an efficient and low cost way to take full advantage of the higher allowed dopant concentrations and, therefore, of the higher maximum output laser power afforded by polycrystalline ceramic lasers. Many novel, unique examples are provided, which demonstrate the versatility and commercial merit of polycrystalline ceramic composite lasers.

US Patent:

20050255033, Nov 17, 2005

Filed:

May 13, 2004

Appl. No.:

10/844703

Inventors:

Yutaka Shimoji - Clearwater FL, US
Daniel Russell - Anchorage AK, US

International Classification:

D01F009/12

US Classification:

423447300

Abstract:

This invention provides a continuous process of making continuous nanofibers of all kinds, such as SiC, BN, AlN, and C. Laser heating a vapor of feed-material made of all atomic elements needed to grow chosen nanofibers results in growth of nanofibers onto seed-nanostructures attached to a filament, which is then pulled up continuously at a rate controlled by a rate of growth of the nanofibers. More feed-material is supplied at a rate sufficient to enable the nanofibers to grow longer continuously without limit. Laser light focused into a doughnut shape provides a photon density gradient, which constrains the nanofibers to grow parallel to each other and in the form of cylinders, so that industrially useful structures like cables and cylinders can be made in one low cost operation and in large quantities.

US Patent:

52685535, Dec 7, 1993

Filed:

May 8, 1992

Appl. No.:

7/880549

Inventors:

Yutaka Shimoji - Clearwater FL

Assignee:

Win International, Inc. - Panama City FL

International Classification:

B23K 2600

US Classification:

2191216

Abstract:

An electrically powered portable cigarette lighter includes a laser for generating a beam of energy and means directing the beam to a point in the region of the end of a cigarette inserted into the lighter. Means are provided for preventing the beam of energy from escaping through the opening in which the cigarette is inserted.

US Patent:

52218201, Jun 22, 1993

Filed:

Dec 13, 1991

Appl. No.:

7/806318

Inventors:

Yutaka Shimoji - Clearwater FL

Assignee:

Win International, Inc. - Panama City FL

International Classification:

B23K 2600

US Classification:

2191216

Abstract:

An electrically powered portable cigarette lighter includes a laser for generating a beam of energy, a focusing system for forming the beam of energy into a substantially hollow doughnut shaped beam which is focused to a point in the region of the end of a cigarette inserted into the lighter. Means are provided for preventing the beam of energy from escaping through the opening in which the cigarette is inserted.

US Patent:

60995203, Aug 8, 2000

Filed:

Jun 30, 1998

Appl. No.:

9/107623

Inventors:

Yutaka Shimoji - Clearwater FL

International Classification:

A61B 1818

US Classification:

606 2

Abstract:

A controlled process for thoroughly curing light-activated surgical and dental composites and a process for tissue sterilization is presented using a hand-held, self-contained, cordless, rechargeable laser instrument. At least one solid state microchip laser is pumped by at least one diode laser to generate blue laser light of at most 480 nm. Q-switched, pulsed laser light output enhances efficiency and control of the curing. Another microchip laser within the instrument generates 210-360 nm wavelength of UV laser light for the sterilization process which differentially kills micro-biological life forms contaminating a repair site without killing healthy tissue. The process of use includes switching from sterilization mode to curing mode of operation of the instrument to save time during surgical and dental procedures.

US Patent:

59282207, Jul 27, 1999

Filed:

Jun 10, 1997

Appl. No.:

8/872085

Inventors:

Yutaka Shimoji - Clearwater FL

International Classification:

A61B 1736

US Classification:

606 2

Abstract:

A compact, hand-held, rechargeable, tunable, self-contained laser instrument is presented for use in dentistry, oral surgery, orthopedic surgery, and other medical procedures such as sterilization and curing of photo-polymerizable materials. The inventive instrument includes microchip lasers that consume at most 10 Watts and generate a peak output laser beam power of at least 20 mWatts that is adjustable to the light absorbing characteristics of the target material. Laser microchips, pumping laser, thermo-electric heat exchanger, rechargeable batteries, and laser optics are all contained within the same housing which is cordless, lightweight, and inexpensive to manufacture.

US Patent:

63257912, Dec 4, 2001

Filed:

Aug 16, 1999

Appl. No.:

9/375062

Inventors:

Yutaka Shimoji - Clearwater FL

International Classification:

A61B 1818

US Classification:

606 2

Abstract:

A controlled process for thoroughly curing light-activated surgical and dental composites is presented using a hand-held, self-contained, cordless, rechargeable laser instrument. At least one diode laser generates focused laser light, and enhances efficiency and control of curing. The process of use includes switching from stand-by mode to curing mode of operation of the instrument to save time during surgical and dental procedures.