EP3601774A4 - Piston sealing system - Google Patents

Piston sealing system Download PDF

Info

Publication number
EP3601774A4
EP3601774A4 EP18777096.1A EP18777096A EP3601774A4 EP 3601774 A4 EP3601774 A4 EP 3601774A4 EP 18777096 A EP18777096 A EP 18777096A EP 3601774 A4 EP3601774 A4 EP 3601774A4
Authority
EP
European Patent Office
Prior art keywords
sealing system
piston sealing
piston
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18777096.1A
Other languages
German (de)
French (fr)
Other versions
EP3601774A1 (en
Inventor
Elario Dino DALMAS
Roy A. BLOM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quest Engines LLC
Original Assignee
Quest Engines LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US15/903,636 external-priority patent/US10465629B2/en
Priority claimed from US15/934,742 external-priority patent/US11041456B2/en
Priority claimed from US15/934,625 external-priority patent/US10526953B2/en
Priority claimed from US15/936,713 external-priority patent/US10590834B2/en
Priority claimed from US15/937,293 external-priority patent/US10989138B2/en
Priority claimed from US15/938,130 external-priority patent/US10590813B2/en
Priority claimed from US15/938,427 external-priority patent/US10753308B2/en
Application filed by Quest Engines LLC filed Critical Quest Engines LLC
Priority claimed from PCT/US2018/025471 external-priority patent/WO2018183895A1/en
Publication of EP3601774A1 publication Critical patent/EP3601774A1/en
Publication of EP3601774A4 publication Critical patent/EP3601774A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M3/00Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00
    • F01B9/02Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 with crankshaft
    • F01B9/026Rigid connections between piston and rod; Oscillating pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08Shape of cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/28Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/36Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
    • F01L1/38Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for engines with other than four-stroke cycle, e.g. with two-stroke cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002Cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/04Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/32Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/02Pistons  having means for accommodating or controlling heat expansion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/02Pistons  having means for accommodating or controlling heat expansion
    • F02F3/027Pistons  having means for accommodating or controlling heat expansion the skirt wall having cavities
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/28Other pistons with specially-shaped head
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/02Bearing surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J9/00Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/08Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction with expansion obtained by pressure of the medium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J9/00Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/18Rocking arms or levers
    • F01L1/185Overhead end-pivot rocking arms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L1/053Camshafts overhead type
    • F01L2001/0537Double overhead camshafts [DOHC]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25Valve configurations in relation to engine
    • F01L2003/256Valve configurations in relation to engine configured other than perpendicular to camshaft axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00Valve arrangements comprising rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP18777096.1A 2017-03-30 2018-03-30 Piston sealing system Withdrawn EP3601774A4 (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US201762479013P 2017-03-30 2017-03-30
US201762491629P 2017-04-28 2017-04-28
US201762501295P 2017-05-04 2017-05-04
US15/903,636 US10465629B2 (en) 2017-03-30 2018-02-23 Internal combustion engine having piston with deflector channels and complementary cylinder head
US15/934,742 US11041456B2 (en) 2017-03-30 2018-03-23 Internal combustion engine
US15/934,625 US10526953B2 (en) 2017-03-30 2018-03-23 Internal combustion engine
US15/936,713 US10590834B2 (en) 2017-03-30 2018-03-27 Internal combustion engine
US15/937,293 US10989138B2 (en) 2017-03-30 2018-03-27 Internal combustion engine
US15/938,130 US10590813B2 (en) 2017-03-30 2018-03-28 Internal combustion engine
US15/938,427 US10753308B2 (en) 2017-03-30 2018-03-28 Internal combustion engine
PCT/US2018/025471 WO2018183895A1 (en) 2017-03-30 2018-03-30 Piston sealing system

Publications (2)

Publication Number Publication Date
EP3601774A1 EP3601774A1 (en) 2020-02-05
EP3601774A4 true EP3601774A4 (en) 2021-01-06

Family

ID=63677001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18777096.1A Withdrawn EP3601774A4 (en) 2017-03-30 2018-03-30 Piston sealing system

Country Status (3)

Country Link
EP (1) EP3601774A4 (en)
CN (1) CN110678639B (en)
WO (2) WO2018183667A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1016561A (en) * 1909-06-02 1912-02-06 Peter Grabler Plunger and cylinder packing.
DE1040841B (en) * 1957-07-26 1958-10-09 Daimler Benz Ag Pistons for internal combustion engines
US3285142A (en) * 1963-04-10 1966-11-15 Doll Robert Piston type cryogenic apparatus
US3640845A (en) * 1968-07-09 1972-02-08 Atomic Energy Commission Dynamic seal
GB1396230A (en) * 1972-07-21 1975-06-04 Linde Ag Pistons for reciprocating machines
JPS5985494A (en) * 1982-11-08 1984-05-17 Asahi Malleable Iron Co Ltd Rotating machine
US5222879A (en) * 1992-05-18 1993-06-29 Ingersoll-Rand Company Contact-less seal and method for making same
EP1275864A1 (en) * 2001-07-09 2003-01-15 Maschinenfabrik Gehring GmbH & Co. Workpiece with a tribologically stressed surface and method of manufacture such a surface

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252914A (en) * 1939-09-11 1941-08-19 Trans America Aircraft And Mot Diesel engine
US2468976A (en) * 1942-06-11 1949-05-03 Chrysler Corp Inverted v-type engine
US2442917A (en) * 1942-08-17 1948-06-08 Chrysler Corp Supporting structure for bearings for piston-connected shafts
US2451271A (en) * 1945-08-18 1948-10-12 George L Balster V-type internal-combustion engine
US2471509A (en) * 1947-05-09 1949-05-31 Nordberg Manufacturing Co Inlet and exhaust valve mechanism with associated turbocharger
US3911753A (en) * 1973-08-17 1975-10-14 Rudolph Daub Connecting rod and connecting rod systems for internal combustion engine and compressors and partitioned cylinder for internal combustion engine
US3881459A (en) * 1974-02-28 1975-05-06 Werner Gaetcke Inlet valve for internal combustion engine and method for supplying fuel thereto
JPS58501832A (en) * 1981-10-19 1983-10-27 アルタネイテイブ コンバスチヨン エンジニアリング インク Integrated intake/exhaust valve mechanism for internal combustion engines
JPS6093117A (en) * 1983-10-26 1985-05-24 Nissan Motor Co Ltd Boiling-cooling type intercooler
IT1208802B (en) * 1985-04-12 1989-07-10 Ae Borgo Spa PISTON IMPROVEMENT FOR ALTERNATIVE ENDOTHERMAL ENGINES TO REALIZE THE OIL CUSHION LUBRICATION OF THE SAME
US4724800A (en) * 1986-08-15 1988-02-16 Southwest Research Institute Ringless piston engine
US4879974A (en) * 1988-03-14 1989-11-14 Alvers Gary M Crankcase supercharged 4 stroke, 6 cycle engine
US5168843A (en) * 1991-12-17 1992-12-08 Franks James W Poppet valve for an internal combustion engine
SE511835C2 (en) * 1996-05-02 1999-12-06 Volvo Ab Apparatus and method for supplying additional air to an internal combustion engine
JP2000064905A (en) * 1998-06-08 2000-03-03 Masahiro Tanizaki Piston of internal combustion engine
FI107827B (en) * 2000-06-19 2001-10-15 Waertsilae Finland Oy Piston engine lubrication arrangement and method for lubricating a piston engine
US6668703B2 (en) * 2000-10-03 2003-12-30 Christopher Gamble Piston with oil trap
US7296545B2 (en) * 2005-08-22 2007-11-20 Ellingsen Jr Raymond Lorel Coaxial poppet valve
BRPI0815906A2 (en) * 2007-08-24 2015-03-03 Honda Motor Co Ltd PISTON FOR AN INTERNAL COMBUSTION ENGINE
CN101178124A (en) * 2007-12-03 2008-05-14 周林 High-lubricating low-friction piston
JP6394485B2 (en) * 2015-05-08 2018-09-26 スズキ株式会社 Piston of internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1016561A (en) * 1909-06-02 1912-02-06 Peter Grabler Plunger and cylinder packing.
DE1040841B (en) * 1957-07-26 1958-10-09 Daimler Benz Ag Pistons for internal combustion engines
US3285142A (en) * 1963-04-10 1966-11-15 Doll Robert Piston type cryogenic apparatus
US3640845A (en) * 1968-07-09 1972-02-08 Atomic Energy Commission Dynamic seal
GB1396230A (en) * 1972-07-21 1975-06-04 Linde Ag Pistons for reciprocating machines
JPS5985494A (en) * 1982-11-08 1984-05-17 Asahi Malleable Iron Co Ltd Rotating machine
US5222879A (en) * 1992-05-18 1993-06-29 Ingersoll-Rand Company Contact-less seal and method for making same
EP1275864A1 (en) * 2001-07-09 2003-01-15 Maschinenfabrik Gehring GmbH & Co. Workpiece with a tribologically stressed surface and method of manufacture such a surface

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEN XIAOLAN ET AL: "Eccentric correction of piston based on bionic micro-texture technology for the gap seal hydraulic cylinder", MICRO & NANO LETTERS, vol. 14, no. 1, 13 September 2018 (2018-09-13), pages 33 - 37, XP006086886, DOI: 10.1049/MNL.2018.5102 *
See also references of WO2018183895A1 *

Also Published As

Publication number Publication date
WO2018183667A1 (en) 2018-10-04
CN110678639A (en) 2020-01-10
WO2018183682A1 (en) 2018-10-04
CN110678639B (en) 2021-08-13
EP3601774A1 (en) 2020-02-05

Similar Documents

Publication Publication Date Title
EP3273117A4 (en) Sealing ring
EP3273115A4 (en) Seal ring
EP3707858A4 (en) Blockchain system
EP3660324A4 (en) Pump and sealing system
EP3330578A4 (en) Piston ring
EP3707684A4 (en) Limited scope blockchain system
EP3271981A4 (en) Seal
EP3608531A4 (en) Piston
EP3552795A4 (en) Sealing method
EP3708973A4 (en) Joint system
EP3273113A4 (en) Piston ring
EP3273116A4 (en) Seal ring
EP3126718A4 (en) Piston seal
EP3252351A4 (en) Piston ring
EP3604869A4 (en) Sealing device
PL3348496T3 (en) Seal assembly system
EP3499095A4 (en) Piston ring
EP3728865B8 (en) Piston-cylinder assembly
EP3594537A4 (en) Gasket
PL3613458T3 (en) Dural sealing system
EP3693153B8 (en) Application unit
EP3190240B8 (en) Sealing element
EP3255323A4 (en) Mechanical seal
EP3601774A4 (en) Piston sealing system
EP3364079A4 (en) Seal ring

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191029

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

A4 Supplementary search report drawn up and despatched

Effective date: 20201203

RIC1 Information provided on ipc code assigned before grant

Ipc: F02F 3/28 20060101AFI20201127BHEP

Ipc: F16J 9/12 20060101ALI20201127BHEP

Ipc: F16J 9/08 20060101ALI20201127BHEP

Ipc: F04B 1/0408 20200101ALI20201127BHEP

Ipc: F16J 15/16 20060101ALI20201127BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20231127

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20240328