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Official data from INPI

MEIO DE VEDAÇÃO MECÂNICA DE SUPERFÍCIE TENDO MEIO CENTRALIZADOR

Arquivada/ExtintaInvention PatentPCT · US1988001676

Application data

Number

PI8807517

Type

Invention Patent

Filing

05/20/1988

Publication

05/22/1990

PCT

US1988001676

Progress at the INPI

  1. Filing05/20/88
  2. Publication05/22/90
  3. Examination02/13/91
  4. Allowance04/14/92
  5. Grant04/27/93
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

John Crane Inc

US

See this company's full portfolio

Inventors

J. N. (pessoa física)

US

M. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

053,311 · 05/22/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/05/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

09/15/1992

RPI 1137

Deferimento

#9.1

04/14/1992

RPI 1115

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

Notificação de entrada na fase nacional - PCT

#1.3

05/22/1990

RPI 1019

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