Keystone International, Inc.

Organization

Houston, TX, US

MISCELLANEOUS FABRICATED METAL PRODUCTS
Business Address
9600 WEST GULF BANK DR HOUSTON TX 77040 7134661176
Mailing Address
P O BOX 40010 HOUSTON TX 77240
State Location
TX
State of Incorporation
TX

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Bellows sealed rotary valve and seal assembly
- Patent number 5,090,658
- Issue date Feb 25, 1992
- Keystone International, Inc.
- Dan P. Kusmer
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method for removing and inserting valve seats
- Patent number 5,042,151
- Issue date Aug 27, 1991
- Keystone International, Inc.
- Walter T. Roush
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Valve seat tool for removing and inserting value seats
- Patent number 4,982,483
- Issue date Jan 8, 1991
- Keystone International Inc.
- Walter T. Roush
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Method and means for mounting valve member on valve stem
- Patent number 4,964,432
- Issue date Oct 23, 1990
- Keystone International, Inc.
- Alan F. Chou
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Portabl tool for cleaning valve bores and associated inlet passage
- Patent number 4,898,201
- Issue date Feb 6, 1990
- Keystone International, Inc.
- Jeff A. Conley
- B08 - CLEANING
Information Patent Grant
High temperature safety relief system
- Patent number 4,870,989
- Issue date Oct 3, 1989
- Keystone International, Inc.
- Cleo M. Bickford
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
High temperature safety relief system
- Patent number 4,865,074
- Issue date Sep 12, 1989
- Keystone International Inc.
- Cleo M. Bickford
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Check valve with disc centering device
- Patent number 4,862,910
- Issue date Sep 5, 1989
- Keystone International, Inc.
- Richard B. Lee
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
High temperature safety relief system
- Patent number 4,848,397
- Issue date Jul 18, 1989
- Keystone International, Inc.
- Cleo M. Bickford
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Transmission assembly for use with double block and bleed system
- Patent number 4,846,225
- Issue date Jul 11, 1989
- Keystone International, Inc.
- William B. Scobie
- B08 - CLEANING
Information Patent Grant
Methods and apparatus for adjusting a valve closure member
- Patent number 4,846,441
- Issue date Jul 11, 1989
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Bleed valve assembly for double block and bleed system
- Patent number 4,846,212
- Issue date Jul 11, 1989
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Valve assembly
- Patent number 4,828,221
- Issue date May 9, 1989
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method for forming a torus and a piston made therefrom for use in a...
- Patent number 4,817,213
- Issue date Apr 4, 1989
- Keystone International, Inc.
- William B. Scobie
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Corrosion-resistant overlay for the edge of butterfly valves
- Patent number 4,773,625
- Issue date Sep 27, 1988
- Keystone International, Inc.
- Douglas G. Calvin
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Apparatus for connecting a valve element to a valve stem
- Patent number 4,711,427
- Issue date Dec 8, 1987
- Keystone International, Inc.
- Edward G. Holtgraver
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Data system
- Patent number 4,701,938
- Issue date Oct 20, 1987
- Keystone International, Inc.
- Clifford Bell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Butterfly valve construction having a composite seat
- Patent number 4,685,611
- Issue date Aug 11, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Disk/stem connection apparatus for butterfly valve
- Patent number 4,682,758
- Issue date Jul 28, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Valve assembly
- Patent number RE32409
- Issue date Apr 28, 1987
- Keystone International, Inc.
- Edward G. Holtgraver
- 137 - Fluid handling
Information Patent Grant
Apparatus for fixing the position of a valve element shaft in a bore
- Patent number 4,659,064
- Issue date Apr 21, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fire-safe ventilation valve
- Patent number 4,651,763
- Issue date Mar 24, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fireproof valve assembly and seal element for use therein
- Patent number 4,649,949
- Issue date Mar 17, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fireproof valve assembly and valve element for use therein
- Patent number 4,648,418
- Issue date Mar 10, 1987
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Declutchable valve override
- Patent number 4,616,803
- Issue date Oct 14, 1986
- Keystone International, Inc.
- Petrus J. R. Schils
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Material level detector and control
- Patent number 4,589,281
- Issue date May 20, 1986
- Keystone International, Inc.
- Joe L. Aldrich
- G01 - MEASURING TESTING
Information Patent Grant
Positioning assembly for use with rotatable valves
- Patent number 4,570,901
- Issue date Feb 18, 1986
- Keystone International, Inc.
- Edward G. Holtgraver
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Rotatable shaft assembly
- Patent number 4,541,612
- Issue date Sep 17, 1985
- Keystone International, Inc.
- Paul A. Yohner
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Valve seat assembly and valve
- Patent number 4,505,290
- Issue date Mar 19, 1985
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Alignment maintaining apparatus for trunnion mounted valves
- Patent number 4,496,135
- Issue date Jan 29, 1985
- Keystone International, Inc.
- William B. Scobie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73750441 - PERFORMANCE BY DESIGN
- Serial number 73750441
- Registration number 1561776
- Filing date Sep 6, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73750210 - TORQUE PLUG
- Serial number 73750210
- Filing date Sep 6, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73750480 - SUPER SEAT
- Serial number 73750480
- Registration number 1603393
- Filing date Sep 6, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73747579 - ZACK
- Serial number 73747579
- Registration number 1529548
- Filing date Aug 22, 1988
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73706879 - FIG. 993
- Serial number 73706879
- Registration number 1541206
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706880 - FIG. 99
- Serial number 73706880
- Registration number 1541207
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706876 - FIG. 999
- Serial number 73706876
- Registration number 1540093
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706882 - FIG. 504
- Serial number 73706882
- Registration number 1540095
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706878 - FIG. 122
- Serial number 73706878
- Registration number 1541205
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706881 - FIG. 228
- Serial number 73706881
- Registration number 1540094
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706877 - FIG. 100
- Serial number 73706877
- Registration number 1541204
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706883 - FIG. 990
- Serial number 73706883
- Registration number 1540096
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73706884 - FIG. 992
- Serial number 73706884
- Registration number 1540097
- Filing date Jan 21, 1988
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73512800 - K-LOK
- Serial number 73512800
- Registration number 1383956
- Filing date Dec 10, 1984
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys
Information Trademark
73319832 - KASIFRAM
- Serial number 73319832
- Registration number 1254372
- Filing date Jul 20, 1981
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73319826 - KASICON
- Serial number 73319826
- Registration number 1221487
- Filing date Jul 20, 1981
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73319833 - KASIFLO
- Serial number 73319833
- Registration number 1222427
- Filing date Jul 20, 1981
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73319496 - KASIROTOR
- Serial number 73319496
- Registration number 1226521
- Filing date Jul 17, 1981
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73319495 - KASITRONIC
- Serial number 73319495
- Filing date Jul 17, 1981
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73177563 - KASITROL
- Serial number 73177563
- Registration number 1133540
- Filing date Jul 10, 1978
- KEYSTONE INTERNATIONAL, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
72373423 - KV
- Serial number 72373423
- Registration number 944456
- Filing date Oct 15, 1970
- KEYSTONE INTERNATIONAL, INC.
- 6 - Common metals and their alloys

Keystone International, Inc.

Organization

Business Address

Mailing Address

State Location

State of Incorporation

Patents Grantslast 30 patents

Bellows sealed rotary valve and seal assembly

Method for removing and inserting valve seats

Valve seat tool for removing and inserting value seats

Method and means for mounting valve member on valve stem

Portabl tool for cleaning valve bores and associated inlet passage

High temperature safety relief system

High temperature safety relief system

Check valve with disc centering device

High temperature safety relief system

Transmission assembly for use with double block and bleed system

Methods and apparatus for adjusting a valve closure member

Bleed valve assembly for double block and bleed system

Valve assembly

Method for forming a torus and a piston made therefrom for use in a...

Corrosion-resistant overlay for the edge of butterfly valves

Apparatus for connecting a valve element to a valve stem

Data system

Butterfly valve construction having a composite seat

Disk/stem connection apparatus for butterfly valve

Valve assembly

Apparatus for fixing the position of a valve element shaft in a bore

Fire-safe ventilation valve

Fireproof valve assembly and seal element for use therein

Fireproof valve assembly and valve element for use therein

Declutchable valve override

Material level detector and control

Positioning assembly for use with rotatable valves

Rotatable shaft assembly

Valve seat assembly and valve

Alignment maintaining apparatus for trunnion mounted valves

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

73750441 - PERFORMANCE BY DESIGN

73750210 - TORQUE PLUG

73750480 - SUPER SEAT

73747579 - ZACK

73706879 - FIG. 993

73706880 - FIG. 99

73706876 - FIG. 999

73706882 - FIG. 504

73706878 - FIG. 122

73706881 - FIG. 228

73706877 - FIG. 100

73706883 - FIG. 990

73706884 - FIG. 992

73512800 - K-LOK

73319832 - KASIFRAM

73319826 - KASICON

73319833 - KASIFLO

73319496 - KASIROTOR

73319495 - KASITRONIC

73177563 - KASITROL

72373423 - KV