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Official data from INPI

PROCESSO PARA O ESFRIAMENTO SÚBITO DE METAIS E DE METAIS FERROSOS

Em AnáliseInvention Patent

Application data

Number

PI8602937

Type

Invention Patent

Filing

06/25/1986

Publication

03/17/1987

Progress at the INPI

  1. Filing06/25/86
  2. Publication03/17/87
  3. Examination08/16/88
  4. Allowance08/04/92
  5. Grant03/30/93
  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: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

P. M. (pessoa física)

US

R. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

749.782 · 06/28/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/16/1988

RPI 930

Publicação do pedido de patente

#3.1

03/17/1987

RPI 856

Pedido de patente depositado

#2.1

02/17/1987

RPI 852

Carta-patente expirada

#21.1

Patente extinta em 25/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

12/29/1992

RPI 1152

Republicação - classificação IPC

#15.11

09/15/1992

RPI 1137

Deferimento

#9.1

08/04/1992

RPI 1131

6.2

01/02/1990

RPI 1000

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