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Official data from INPI

VEDAÇÃO DE EIXO DE ALTA PRESSÃO.

Em AnáliseInvention Patent

Application data

Number

PI8100747

Type

Invention Patent

Filing

02/06/1981

Publication

-

Progress at the INPI

  1. Filing02/06/81
  2. Publication
  3. Examination12/15/81
  4. Allowance02/17/87
  5. Grant08/25/87
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. F. (pessoa física)

DE

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Inventors

G. R. (pessoa física)

Technical data

IPC Classification

Priority claims

US

119.631 · 02/07/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

17.3

10/03/1989

RPI 989

Pedido de licença voluntária

#17.1

10/04/1988

RPI 937

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

02/17/1987

RPI 852

Exigência - art. 36 da LPI

#6.1

06/24/1986

RPI 818

Pedido de certificado de adição de invenção

#5.1

06/01/1982

RPI 606

5.2

05/25/1982

RPI 605

Solicitação de exame técnico

#4.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

201

05/29/1990

RPI 1020

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