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Official data from INPI

VALVULA PARA SUBSTANCIA CORROSIVAS E ABRASIVAS

Em AnáliseUtility Model

Application data

Number

MU6200684

Type

Utility Model

Filing

05/19/1982

Publication

12/27/1983

Progress at the INPI

  1. Filing05/19/82
  2. Publication12/27/83
  3. Examination10/02/84
  4. Allowance07/19/88
  5. Grant03/28/89
  6. Expired12/07/93

The letters patent expired on 12/07/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

RUDOLF WIEDERWALD [BR]

Inventors

W. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

12/12/1989

RPI 999

Pedido de licença voluntária

#17.1

06/20/1989

RPI 974

Concessão da patente

#16.1

03/28/1989

RPI 962

Notificação para pagamento de retribuição

#13.1

11/01/1988

RPI 941

100

07/19/1988

RPI 926

120

04/07/1987

RPI 859

Petição de recurso

#12.2

12/02/1986

RPI 841

Indeferimento

#9.2

07/29/1986

RPI 823

Pedido de certificado de adição de invenção

#5.1

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

10/02/1984

RPI 728

Publicação do pedido de patente

#3.1

12/27/1983

RPI 688

Pedido de patente depositado

#2.1

07/06/1982

RPI 611

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

Pedido de licença compulsória

#20.1

08/07/1990

RPI 1027

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