U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.

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Examiner: Freeh, William L.


Primary examiner statistics: 1755 patents; average approval time: 729 days
Assistant examiner statistics: 0 patents; average approval time: N/A

Patents as Primary Examiner (view all)

Patent No. Patent Title:
4915595 Valve/piston cartridge and rotor bearing pre-load for a radial pi...
4913625 Automatic pump protection system
4902205 Oil pump for a horizontal type rotary compressor
4892467 Balanced rolling rotor motor compressor
4890985 Air conditioning system with variable capacity compressor
4890986 Variable capacity compressor
4887943 Gas compressor of variable volume
4886502 Peritoneal access catheter
4886423 Variable displacement swash-plate type compressor
4886437 Bearing arrangement of an external-axial rotary piston blower
4884952 Variable displacement compressor
4884954 Twin coil apparatus and energizing structure therefor
4881879 Rotary compressor gas routing for muffler system
4881878 Gas compressor of variable volume
4881877 Radial piston pump
4880358 Ultra-high vacuum force, low air consumption pumps
4880356 Method of controlling wobble plate type compressor
4880361 Multi-piston swash plate type compressor with arrangement for int...
4880360 Variable displacement compressor with biased inclined member
4878817 Wobble plate type compressor with variable displacement mechanism
4878814 Variable capacity compressor with capacity-indicating device
4875834 Wobble plate type compressor with variable displacement mechanism
4875832 Pressure control valve for variable displacement swash plate type...
4875833 Pumping of high viscosity materials
4875835 Variable displacement compressor
4874298 Double selectable delivery pump
4874295 Slant plate type compressor with variable displacement mechanism
4872687 Putting tutor
4872394 Bent axis type axial piston pump or motor
4872814 Variable displacement compressor passive destroker
4872815 Slant plate type compressor with variable displacement mechanism
4870894 Wobble plate type compressor with a drive shaft attached to a cam...
4870893 Wobble plate type compressor with a drive shaft attached to a cam...
4869154 Wobble plate type compressor with a drive shaft attached to a cam...
4869652 Variable capacity compressor
4869646 Continuous peristaltic pump
4867649 Refrigerating system
4867651 Variable capacity vane compressor
4867042 Casing and cover for fluid energy converter
4867648 Variable displacement wobble plate type compressor for automotive...

Patents as Assistant Examiner

Patent No. Patent Title:
No patents.
 
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