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Official data from INPI

GAXETA APERFEIÇOADA DE CABEÇOTE DE CILINDRO E PROCESSO DE SUA PRODUÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8306988

Type

Invention Patent

Filing

12/20/1983

Publication

07/24/1984

Progress at the INPI

  1. Filing12/20/83
  2. Publication07/24/84
  3. Examination09/02/86
  4. Allowance07/24/90
  5. Grant08/27/91
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 01/21/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

See this company's full portfolio

Inventors

R. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

06/450.855 · 12/20/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

01/21/1987

RPI 848

Solicitação de exame técnico

#4.1

09/02/1986

RPI 828

Publicação do pedido de patente

#3.1

07/24/1984

RPI 718

Pedido de patente depositado

#2.1

02/28/1984

RPI 697

Carta-patente expirada

#21.1

Patente extinta em 20/12/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

08/27/1991

RPI 1082

110

04/23/1991

RPI 1064

Recurso

#12.1

10/30/1990

RPI 1039

Deferimento

#9.1

07/24/1990

RPI 1025

Exigência - art. 36 da LPI

#6.1

01/09/1990

RPI 1001

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