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Official data from INPI

PROCESSO PARA REDUÇÃO IN-SITU DE BORO E LIGA AMORFA.

Em ExigênciaInvention Patent

Application data

Number

PI8500428

Type

Invention Patent

Filing

01/31/1985

Publication

09/10/1985

Progress at the INPI

  1. Filing01/31/85
  2. Publication09/10/85
  3. Examination09/15/87
  4. Allowance04/13/93
  5. Grant09/28/93
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Armco, Inc.

US

See this company's full portfolio

Inventors

L. E. (pessoa física)

US

R. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

576,341 · 02/02/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

09/15/1987

RPI 882

Publicação do pedido de patente

#3.1

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

04/23/1985

RPI 757

Carta-patente expirada

#21.1

Patente extinta em 31/01/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

09/28/1993

RPI 1191

Notificação para pagamento de retribuição

#13.1

08/03/1993

RPI 1183

Deferimento

#9.1

04/13/1993

RPI 1167

Exigência - art. 36 da LPI

#6.1

07/14/1992

RPI 1128

Conhecimento de parecer técnico

#7.1

11/27/1990

RPI 1043

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