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Official data from INPI

DISPOSITIVO AUTOMÁTICO DE CONTROLE DE FLUXO

Arquivada/ExtintaInvention PatentPCT · US1987000450

Application data

Number

PI8706201

Type

Invention Patent

Filing

02/27/1987

Publication

04/05/1988

PCT

US1987000450

Progress at the INPI

  1. Filing02/27/87
  2. Publication04/05/88
  3. Examination02/06/90
  4. Allowance04/19/94
  5. Grant12/27/94
  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: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Recurrent Solutions Limited Partnership

US

Inventors

J. S. (pessoa física)

US

N. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

834.741 · 02/28/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

04/05/1988

RPI 911

Carta-patente expirada

#21.1

Patente extinta em 27/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

08/16/1994

RPI 1237

Deferimento

#9.1

04/19/1994

RPI 1220

Exigência - art. 36 da LPI

#6.1

06/22/1993

RPI 1177

Conhecimento de parecer técnico

#7.1

08/27/1991

RPI 1082

Solicitação de exame técnico

#4.1

02/06/1990

RPI 1005

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