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Official data from INPI

APARELHO E PROCESSO PARA REVESTIR A ALTA VELOCIDADE O INTERIOR DE TUBOS

Em AnáliseInvention Patent

Application data

Number

PI8606567

Type

Invention Patent

Filing

03/10/1986

Publication

08/11/1987

Progress at the INPI

  1. Filing03/10/86
  2. Publication08/11/87
  3. Examination05/31/88
  4. Allowance10/23/90
  5. Grant04/30/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cast Iron Pipe Company

US

Inventors

T. W. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

717.730 · 03/29/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/31/1988

RPI 919

Notificação de entrada na fase nacional - PCT

#1.3

08/11/1987

RPI 877

Carta-patente expirada

#21.1

Patente extinta em 10/03/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

02/05/1991

RPI 1053

Deferimento

#9.1

10/23/1990

RPI 1038

Conhecimento de parecer técnico

#7.1

05/29/1990

RPI 1020

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