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Official data from INPI

Processo para degaseificação e descarbonização a vácuo por compensação na queda da temperatura

Prazo de SigiloInvention Patent

Application data

Number

PI8903188

Type

Invention Patent

Filing

06/21/1989

Publication

02/13/1990

Progress at the INPI

  1. Filing06/21/89
  2. Publication02/13/90
  3. Examination01/14/92
  4. Allowance09/09/97
  5. Grant07/28/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. C. (pessoa física)

JP

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Inventors

H. N. (pessoa física)

JP

K. K. (pessoa física)

JP

R. A. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

63-151175 · 06/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/17/1989

RPI 991

Carta-patente expirada

#21.1

Patente extinta em 21/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

09/09/1997

RPI 1397

6.2

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

01/14/1992

RPI 1102

Publicação do pedido de patente

#3.1

02/13/1990

RPI 1006

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