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Official data from INPI

VÁLVULA BIDIRECIONAL.

ConcedidaInvention Patent

Application data

Number

PI8204727

Type

Invention Patent

Filing

08/12/1982

Publication

03/20/1984

Progress at the INPI

  1. Filing08/12/82
  2. Publication03/20/84
  3. Examination06/04/85
  4. Allowance08/04/87
  5. Grant02/23/88
  6. Terminated10/16/90

The patent was granted on 02/23/1988 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: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Crane Co

US

Inventors

K. A. (pessoa física)

US

V. M. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

11/24/1987

RPI 892

Deferimento

#9.1

08/04/1987

RPI 876

Republicação - classificação IPC

#15.11

05/05/1987

RPI 863

Exigência - art. 36 da LPI

#6.1

05/27/1986

RPI 814

Pedido de certificado de adição de invenção

#5.1

11/12/1985

RPI 786

Solicitação de exame técnico

#4.1

06/04/1985

RPI 763

Publicação do pedido de patente

#3.1

03/20/1984

RPI 700

Pedido de patente depositado

#2.1

09/28/1982

RPI 623

Anuidade - prazo legal encerrado

#18.2

10/16/1990

RPI 1037

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