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Official data from INPI

MÉTODO PARA RESFRIAR E CONGELAR UM ARTIGO FORMADO POR MATERIAL ORGÂNICO; E CONGELADOR MECÂNICO CRIOGÊNICO DE COMBINAÇÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904701

Type

Invention Patent

Filing

09/19/1989

Publication

05/01/1990

Progress at the INPI

  1. Filing09/19/89
  2. Publication05/01/90
  3. Examination07/30/91
  4. Allowance08/23/94
  5. Grant04/25/95
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 12/22/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

Union Carbide Chemicals and Plastics Company Inc.

US

See this company's full portfolio

Inventors

A. A. (pessoa física)

US

J. N. (pessoa física)

US

M. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

246.862 · 09/20/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/09/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

04/25/1995

RPI 1273

14.1

10/25/1994

RPI 1247

14.4

10/18/1994

RPI 1246

Deferimento

#9.1

08/23/1994

RPI 1238

Exigência - art. 36 da LPI

#6.1

11/09/1993

RPI 1197

Solicitação de exame técnico

#4.1

07/30/1991

RPI 1078

Publicação do pedido de patente

#3.1

05/01/1990

RPI 1016

Pedido de patente depositado

#2.1

03/13/1990

RPI 1009

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