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Official data from INPI

CENTRADOR DE TUBO DE REVESTIMENTO

Em AnáliseInvention Patent

Application data

Number

PI8700248

Type

Invention Patent

Filing

01/21/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing01/21/87
  2. Publication05/24/88
  3. Examination09/27/88
  4. Allowance09/25/90
  5. Grant04/30/91
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. M. (pessoa física)

US

Inventors

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

06/924.929 · 10/30/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/27/1988

RPI 936

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

05/12/1987

RPI 864

Carta-patente expirada

#21.1

Patente extinta em 21/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/08/1991

RPI 1049

Deferimento

#9.1

09/25/1990

RPI 1034

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