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Official data from INPI

PROCESSO PARA A CONCENTRAÇÃO DE UM MINÉRIO DE SULFURETO

Em AnáliseInvention Patent

Application data

Number

PI8602050

Type

Invention Patent

Filing

05/07/1986

Publication

01/06/1987

Progress at the INPI

  1. Filing05/07/86
  2. Publication01/06/87
  3. Examination03/15/88
  4. Allowance11/12/91
  5. Grant08/25/92
  6. Terminated09/26/95

The patent was granted on 08/25/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/15/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sherex Chemical, Inc.

US

Inventors

R. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

731.713 · 05/07/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/15/1988

RPI 908

Publicação do pedido de patente

#3.1

01/06/1987

RPI 846

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Anuidade - prazo legal encerrado

#18.2

09/26/1995

RPI 1295

Concessão da patente

#16.1

08/25/1992

RPI 1134

Notificação para pagamento de retribuição

#13.1

03/31/1992

RPI 1113

Deferimento

#9.1

11/12/1991

RPI 1093

Exigência - art. 36 da LPI

#6.1

04/30/1991

RPI 1065

Retificação

#15.6

05/08/1990

RPI 1017

15.4

03/01/1990

RPI 1007

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