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Official data from INPI

VASO PARA O REFINO DE ALUMÍNIO EM DOIS-ESTÁGIOS

Prazo de SigiloInvention Patent

Application data

Number

PI8803912

Type

Invention Patent

Filing

08/08/1988

Publication

03/13/1990

Progress at the INPI

  1. Filing08/08/88
  2. Publication03/13/90
  3. Examination10/29/91
  4. Allowance01/02/96
  5. Grant12/31/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

J. P. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

01/10/1989

RPI 951

Carta-patente expirada

#21.1

Patente extinta em 08/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

12/31/1996

RPI 1361

Notificação para pagamento de retribuição

#13.1

07/02/1996

RPI 1335

Deferimento

#9.1

01/02/1996

RPI 1309

Exigência - art. 36 da LPI

#6.1

05/09/1995

RPI 1275

14.1

11/22/1994

RPI 1251

14.4

11/08/1994

RPI 1249

Solicitação de exame técnico

#4.1

10/29/1991

RPI 1091

Publicação do pedido de patente

#3.1

03/13/1990

RPI 1009

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