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Official data from INPI

APARELHO PARA O FORNECIMENTO DE GÁS A UMA TUBULAÇÃO DE GROSSO CALIBRE QUE REQUER ALTO COEFICIENTE DE FLUXO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004676

Type

Invention Patent

Filing

09/19/1990

Publication

09/10/1991

Progress at the INPI

  1. Filing09/19/90
  2. Publication09/10/91
  3. Examination11/24/92
  4. Allowance03/15/94
  5. Grant11/29/94
  6. Expired06/01/10

The letters patent expired on 06/01/2010: 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: 06/01/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

See this company's full portfolio

Inventors

D. O. (pessoa física)

US

L. K. (pessoa física)

US

R. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

409.766 · 09/20/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/09/2005

06/01/2010

RPI 2056

Concessão da patente

#16.1

11/29/1994

RPI 1252

Notificação para pagamento de retribuição

#13.1

06/28/1994

RPI 1230

Deferimento

#9.1

03/15/1994

RPI 1215

14.4

06/22/1993

RPI 1177

14.7

06/22/1993

RPI 1177

Solicitação de exame técnico

#4.1

11/24/1992

RPI 1147

Publicação do pedido de patente

#3.1

09/10/1991

RPI 1084

Pedido de patente depositado

#2.1

03/26/1991

RPI 1060

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