CA3004233C - Forming composite features using steered discontinuous fiber pre-preg - Google Patents

Forming composite features using steered discontinuous fiber pre-preg Download PDF

Info

Publication number
CA3004233C
CA3004233C CA3004233A CA3004233A CA3004233C CA 3004233 C CA3004233 C CA 3004233C CA 3004233 A CA3004233 A CA 3004233A CA 3004233 A CA3004233 A CA 3004233A CA 3004233 C CA3004233 C CA 3004233C
Authority
CA
Canada
Prior art keywords
substrate
preg
segments
fiber pre
chopped fiber
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.)
Active
Application number
CA3004233A
Other languages
English (en)
French (fr)
Other versions
CA3004233A1 (en
Inventor
Kenneth H. Griess
Derek P. Vetter
Michael J. Graves
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.)
Boeing Co
Original Assignee
Boeing Co
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
Application filed by Boeing Co filed Critical Boeing Co
Publication of CA3004233A1 publication Critical patent/CA3004233A1/en
Application granted granted Critical
Publication of CA3004233C publication Critical patent/CA3004233C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545—Perforating, cutting or machining during or after moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0072—Shaping techniques involving a cutting or machining operation combined with rearranging and joining the cut parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0872—Prepregs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B29K2105/14—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Robotics (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
CA3004233A 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg Active CA3004233C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/789,965 2013-03-08
US13/789,965 US20140255646A1 (en) 2013-03-08 2013-03-08 Forming Composite Features Using Steered Discontinuous Fiber Pre-Preg
CA2898224A CA2898224C (en) 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2898224A Division CA2898224C (en) 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg

Publications (2)

Publication Number Publication Date
CA3004233A1 CA3004233A1 (en) 2014-09-12
CA3004233C true CA3004233C (en) 2020-03-24

Family

ID=50190809

Family Applications (2)

Application Number Title Priority Date Filing Date
CA3004233A Active CA3004233C (en) 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg
CA2898224A Active CA2898224C (en) 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2898224A Active CA2898224C (en) 2013-03-08 2014-02-14 Forming composite features using steered discontinuous fiber pre-preg

Country Status (9)

Country Link
US (2) US20140255646A1 (https=)
EP (1) EP2964451B1 (https=)
JP (2) JP6453250B2 (https=)
KR (1) KR102119435B1 (https=)
CN (2) CN110920093A (https=)
BR (1) BR112015019511A2 (https=)
CA (2) CA3004233C (https=)
MX (1) MX388975B (https=)
WO (1) WO2014137568A2 (https=)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140255646A1 (en) 2013-03-08 2014-09-11 The Boeing Company Forming Composite Features Using Steered Discontinuous Fiber Pre-Preg
US9821339B2 (en) 2014-12-19 2017-11-21 Palo Alto Research Center Incorporated System and method for digital fabrication of graded, hierarchical material structures
US9486960B2 (en) 2014-12-19 2016-11-08 Palo Alto Research Center Incorporated System for digital fabrication of graded, hierarchical material structures
US10160004B2 (en) 2015-07-07 2018-12-25 Palo Alto Research Center Incorporated Creating aligned and oriented fiber reinforced polymer composites
US10538050B2 (en) * 2015-10-12 2020-01-21 C&D Zodiac, Inc. Aircraft panel assembly with reinforcement layers
KR20180087339A (ko) * 2015-11-25 2018-08-01 헥셀 컴포지츠 에스.아.에스. 섬유 보강된 복합재에서의 또는 이와 관련된 개선
CN106113521B (zh) * 2016-06-29 2018-07-17 西安交通大学 贝壳仿生复合材料增韧结构及其设计方法和自动化制造工艺
DE102016213407B4 (de) * 2016-07-22 2026-04-30 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zur effizienten Herstellung von Bauteilrohlingen aus Verbundwerkstoffen
GB2556065B (en) * 2016-11-16 2020-09-16 Ge Aviat Systems Ltd Method for forming stiffened composite parts
US10947419B2 (en) 2018-07-23 2021-03-16 Palo Alto Research Center Incorporated Method for joining dissimilar materials
US11173675B2 (en) * 2019-03-25 2021-11-16 The Boeing Company Automated fiber-placement systems and methods
JP7322588B2 (ja) * 2019-08-19 2023-08-08 株式会社豊田自動織機 繊維構造体及び繊維強化複合材
CN111016005B (zh) * 2019-12-10 2025-01-24 深圳市飞荣达科技股份有限公司 纤维预浸料制备装置及纤维预浸料制备方法
EP4081396A4 (en) * 2020-03-06 2024-03-27 Galactic Co., LLC SHAPED COMPOSITE COATINGS FOR VEHICLES AND METHOD FOR MANUFACTURING SUCH COATINGS AT HIGH RATE
JP7240559B2 (ja) * 2020-03-31 2023-03-15 川崎重工業株式会社 航空機部品の中間生成品の製造方法および航空機部品
AU2020202379A1 (en) * 2020-04-03 2021-10-21 Darcan Technology Holdings Pty Ltd Fibre material
DE102021131453A1 (de) 2021-11-30 2023-06-01 Cevotec Gmbh Anordnung von Faserbändern

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574040A (en) * 1967-06-29 1971-04-06 Gen Dynamics Corp Apparatus for making laminated structural shapes by the controlled detrusive placement and polymerization of tectonic filamentous tapes
US4212216A (en) * 1979-01-22 1980-07-15 Ives Frank E Deflector for attachment to fiber chopper nozzle
JPS58193117A (ja) * 1982-05-07 1983-11-10 Mitsubishi Rayon Co Ltd プリプレグ及びその製造法
US4806298A (en) * 1984-11-21 1989-02-21 The Budd Company A cutter for cutting resin impregnated strands and a method and apparatus for making a charge for molding a fiber reinforced part
MX171501B (es) * 1984-11-21 1993-11-03 Budd Co Metodo y aparato para producir una carga para moldear una pieza reforzada con fibras
US4740346A (en) * 1986-02-26 1988-04-26 The Budd Company Perimeter resin feeding of composite structures
US5272000A (en) 1987-05-22 1993-12-21 Guardian Industries Corp. Non-woven fibrous product containing natural fibers
US5164255A (en) 1989-08-31 1992-11-17 E. I. Du Pont De Nemours And Company Nonwoven preform sheets of fiber reinforced resin chips
IL95489A0 (en) * 1989-08-31 1991-06-30 Du Pont Nonwoven preform sheets of fiber reinforced resin
US5380477A (en) * 1993-05-25 1995-01-10 Basf Corporation Process of making fiber reinforced laminates
US6182332B1 (en) * 1999-07-30 2001-02-06 Owens Corning Composites Sprl Method of forming discrete length fibers
US6799081B1 (en) 2000-11-15 2004-09-28 Mcdonnell Douglas Corporation Fiber placement and fiber steering systems and corresponding software for composite structures
WO2003047830A1 (en) * 2001-12-06 2003-06-12 Toray Industries, Inc. Fiber-reinforced composite material and method for production thereof
KR100971686B1 (ko) 2002-04-23 2010-07-22 도레이 카부시키가이샤 프리프레그, 그 제조방법 및 성형품
GB0222753D0 (en) * 2002-10-02 2002-11-06 Carbon Fibre Technology Ltd Method of production of advanced composite materials
US7249943B2 (en) * 2003-08-01 2007-07-31 Alliant Techsystems Inc. Apparatus for forming composite stiffeners and reinforcing structures
US7402269B2 (en) * 2005-10-25 2008-07-22 The Boeing Company Environmentally stable hybrid fabric system for exterior protection of an aircraft
US7807005B2 (en) * 2006-02-02 2010-10-05 The Boeing Company Fabrication process for thermoplastic composite parts
ES2291131B1 (es) * 2006-08-08 2008-12-01 Manuel Torres Martinez Cabezal de aplicacion de cintas de fibra de carbono y metodo de aplicacion.
JP2008057849A (ja) 2006-08-31 2008-03-13 Denso Corp 熱交換器の製造方法
CN101516589B (zh) 2006-09-28 2012-06-27 东丽株式会社 复合预浸料坯基材的制造方法、层合基材及纤维增强塑料
ES2744974T3 (es) * 2007-02-02 2020-02-27 Toray Industries Material de base preimpregnado, material de base laminado, procedimiento para producir material de base preimpregnado y proceso para producir plástico reforzado con fibra
JP5572947B2 (ja) * 2007-06-04 2014-08-20 東レ株式会社 成形材料、および、繊維強化プラスチック、ならびに、これらの製造方法
US8440276B2 (en) 2008-02-11 2013-05-14 Albany Engineered Composites, Inc. Multidirectionally reinforced shape woven preforms for composite structures
US9090028B2 (en) * 2008-04-17 2015-07-28 The Boeing Company Method for producing contoured composite structures and structures produced thereby
JP5253510B2 (ja) * 2008-07-24 2013-07-31 アレニア・アエルマッキ・ソシエタ・ペル・アチオニ プリプレグ材料屑の再利用方法
EP2179838B1 (en) * 2008-10-23 2017-12-06 Campagnolo S.r.l. Sheet moulding compound
BRPI0924434A2 (pt) 2009-06-01 2016-01-26 Mitsubishi Heavy Ind Ltd métodos de fabricação de elemento de material compósito, de estrutura de asa de aeronave e de estrutura de fuselagem de aeronave, e, laminado de folha de prepreg.
BR112012007154B1 (pt) 2009-10-01 2019-12-10 Albany Eng Composites Inc pré-forma tecida tridimensional, compósito reforçado com fibra e métodos de formação de pré-forma tecida tridimensional e de compósito reforçado com fibra
JP5713568B2 (ja) * 2010-02-10 2015-05-07 三菱航空機株式会社 構造材の製造方法、構造材
US8668864B2 (en) * 2011-05-31 2014-03-11 MRA Systems Inc. Polymer composite materials and processes therefor
US9463880B2 (en) 2013-02-07 2016-10-11 The Boeing Company Method and system of making composite structures having gap fillers with chopped fiber material
US20140255646A1 (en) 2013-03-08 2014-09-11 The Boeing Company Forming Composite Features Using Steered Discontinuous Fiber Pre-Preg

Also Published As

Publication number Publication date
KR102119435B1 (ko) 2020-06-08
JP6453250B2 (ja) 2019-01-16
EP2964451A2 (en) 2016-01-13
CN110920093A (zh) 2020-03-27
CA3004233A1 (en) 2014-09-12
WO2014137568A3 (en) 2014-11-20
CN105073392A (zh) 2015-11-18
CA2898224C (en) 2018-06-12
KR20150126346A (ko) 2015-11-11
BR112015019511A2 (pt) 2017-07-18
US20140255646A1 (en) 2014-09-11
JP2019069610A (ja) 2019-05-09
US20180186099A1 (en) 2018-07-05
MX2015010813A (es) 2015-11-26
WO2014137568A2 (en) 2014-09-12
EP2964451B1 (en) 2025-01-15
MX388975B (es) 2025-03-20
JP6612958B2 (ja) 2019-11-27
US11007726B2 (en) 2021-05-18
JP2016510701A (ja) 2016-04-11
CA2898224A1 (en) 2014-09-12

Similar Documents

Publication Publication Date Title
US11007726B2 (en) Forming composite features using steered discontinuous fiber pre-preg
McIlhagger et al. Manufacturing processes for composite materials and components for aerospace applications
US9463880B2 (en) Method and system of making composite structures having gap fillers with chopped fiber material
CA2857783C (en) Laminated composite radius filler with geometric shaped filler element and method of forming the same
US9517594B2 (en) Composite structure having a stabilizing element
US20200016796A1 (en) Methods of making hybrid laminate and molded composite structures
US11220069B2 (en) Composite laminate structures

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20180507

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 11TH ANNIV.) - STANDARD

Year of fee payment: 11

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20250207

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT DETERMINED COMPLIANT

Effective date: 20250207