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Official data from INPI

PROCESSO PARA A LIMPEZA DE CAVIDADES EM VALVULAS DE ASSENTO DUPLO

ConcedidaInvention Patent

Application data

Number

PI8301577

Type

Invention Patent

Filing

03/28/1983

Publication

12/06/1983

Progress at the INPI

  1. Filing03/28/83
  2. Publication12/06/83
  3. Examination02/12/86
  4. Allowance09/08/87
  5. Grant06/28/88
  6. Terminated04/02/96

The patent was granted on 06/28/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Holstein Und Kappert Gmbh.

DE

Inventors

B. W. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Solicitação de exame técnico

#4.1

02/12/1986

RPI 799

Publicação do pedido de patente

#3.1

12/06/1983

RPI 685

Pedido de patente depositado

#2.1

05/10/1983

RPI 655

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B67D 5/58; B08B 9/08; F16K 51/00.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

04/02/1996

RPI 1322

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