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Official data from INPI

CONJUNTO DE GAXETA DE HASTE DE VÁLVULA, NA FORMA DE UM ARRANJO EMPILHADO.

Em AnáliseInvention Patent

Application data

Number

PI8505010

Type

Invention Patent

Filing

10/09/1985

Publication

07/29/1986

Progress at the INPI

  1. Filing10/09/85
  2. Publication07/29/86
  3. Examination04/26/88
  4. Allowance01/09/90
  5. Grant12/26/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/20/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. C. (pessoa física)

US

See this company's full portfolio

Inventors

T. U. (pessoa física)

US

W. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

680.870 · 12/12/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

09/20/1988

RPI 935

Solicitação de exame técnico

#4.1

04/26/1988

RPI 914

Publicação do pedido de patente

#3.1

07/29/1986

RPI 823

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Carta-patente expirada

#21.1

Patente extinta em 09/10/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

12/26/1990

RPI 1047

110

10/02/1990

RPI 1035

Recurso

#12.1

05/15/1990

RPI 1018

Deferimento

#9.1

01/09/1990

RPI 1001

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