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Official data from INPI

ELEMENTO E ESTRUTURA DE CORTE PARA BITE DE BROCA ROTATIVA, BITE DE BROCA ROTATIVA E PROCESSO PARA FORMAÇÃO DE ESTRUTURA DE CORTE

DeferidaInvention Patent

Application data

Number

PI8406135

Type

Invention Patent

Filing

11/30/1984

Publication

09/24/1985

Progress at the INPI

  1. Filing11/30/84
  2. Publication09/24/85
  3. Examination10/13/87
  4. Allowance10/10/89
  5. Grant05/29/90
  6. Terminated05/14/96

The patent was granted on 05/29/1990 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL Petroleum Products Limited

GB

Inventors

J. B. (pessoa física)

GB

M. W. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8332343 · 12/03/1983

GB

8405181 · 02/28/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

10/10/1989

RPI 990

Pedido de certificado de adição de invenção

#5.1

02/17/1988

RPI 904

Solicitação de exame técnico

#4.1

10/13/1987

RPI 886

Publicação do pedido de patente

#3.1

09/24/1985

RPI 779

Pedido de patente depositado

#2.1

02/26/1985

RPI 749

Anuidade - prazo legal encerrado

#18.2

05/14/1996

RPI 1328

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

02/06/1990

RPI 1005

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