MARTIN ROBERT ROYCE
Engineers in Lancaster, PA
License number
Pennsylvania PE010005E
Category
Engineers
Type
Professional Engineer
Address
Address
Lancaster, PA 17601
Personal information
See more information about MARTIN ROBERT ROYCE at radaris.comName
Address
Phone
1938 Crooked Oak Dr, Lancaster, PA 17601
1938 Crooked Oak Dr, Lancaster, PA 17601
Professional information
Long Decay Phoaphors
US Patent:
5376303, Dec 27, 1994
Filed:
Jan 10, 1994
Appl. No.:
7/258304
Inventors:
Martin R. Royce - Lancaster PA
Hiroto Tamaki - Lancaster PA
Yoshinori Murazaki - Komatsushima, JP
Hiroto Tamaki - Lancaster PA
Yoshinori Murazaki - Komatsushima, JP
Assignee:
Nichia Chemical Industries, Ltd.
International Classification:
C09K 1164
US Classification:
2523014R
Abstract:
Long decay phosphors are disclosed that are comprised of rare-earth activated divalent, boron-substituted aluminates. In particular, the long decay phosphors are comprised of
MO. a(Al. sub. 1-b B. sub. b). sub. 2 O. sub. 3 :cR,
wherein
0. 5. ltoreq. a. ltoreq. 10. 0,
0. 0001. ltoreq. b. ltoreq. 5 and
0. 0001. ltoreq. c. ltoreq. 2,
MO represents at least one divalent metal oxide selected from the group consisting of MgO, CaO, SrO and ZnO and R represents Eu and at least one additional rare earth element. Preferably, R represents Eu and at least one additional rare earth element selected from the group consisting of Pt, Nd, Dy and Tm.
Method For Preparing Filter-Coated Phosphor Particles
US Patent:
4021588, May 3, 1977
Filed:
Jan 23, 1976
Appl. No.:
5/651919
Inventors:
Martin Robert Royce - Lancaster PA
Robert Paul Thompson - Millersville PA
Robert Paul Thompson - Millersville PA
Assignee:
RCA Corporation - New York NY
International Classification:
B23K 3102
US Classification:
427215
Abstract:
Method comprises dispersing phosphor particles in a liquid medium and then precipitating filter material on the phosphor particles. The filter-covered phosphor particles are removed from the medium, dried and then heated until the filter material sinters to the surfaces of the phosphor particles as discrete filter particles.
Method For Preparing Copper-Aluminum-Gold-Activated Zinc-Sulfide Phosphors
US Patent:
4316816, Feb 23, 1982
Filed:
Dec 6, 1978
Appl. No.:
5/967094
Inventors:
Martin R. Royce - Lancaster PA
Donnavon D. Shaffer - Lititz PA
Donnavon D. Shaffer - Lititz PA
Assignee:
RCA Corporation - New York NY
International Classification:
C09K 1150
US Classification:
2523016S
Abstract:
A method for preparing a phosphor including heating at its reaction temperature in a covered container a mixture of zinc sulfide, an activator quantity of copper as a compound thereof, an activator quantity of aluminum as a compound thereof, an activator quantity of gold as a compound thereof, a minor proportion of elemental selenium, a minor proportion of elemental sulfur and a minor proportion of carbon. The reaction mixture is heated in the container and the product is then cooled. After cooling, whatever carbon remains is removed as by screening.
Red Emitting Long Decay Phosphors
US Patent:
5650094, Jul 22, 1997
Filed:
Jun 6, 1995
Appl. No.:
8/466570
Inventors:
Martin R. Royce - Lancaster PA
Shinya Matsuda - Lancaster PA
Hiroto Tamaki - Tokushima, JP
Shinya Matsuda - Lancaster PA
Hiroto Tamaki - Tokushima, JP
International Classification:
C09K 1100
US Classification:
2523014F
Abstract:
Long decay phosphors are disclosed that are comprised of rare-earth activated divalent titanates. In particular, the long decay phosphors are comprised of
(Ca. sub. (1-a-b) Pr. sub. a M. sub. b)O. TiO. sub. 2
wherein
0. 00001. ltoreq. a. ltoreq. 1 and
0. ltoreq. b. ltoreq. 3
and M is Zn and/or Mg.