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Official data from INPI

PROCESSO PARA PURIFICAÇÃO DEÁCIDO FÓSFORICO.

Em AnáliseInvention Patent

Application data

Number

PI8602055

Type

Invention Patent

Filing

05/07/1986

Publication

01/06/1987

Progress at the INPI

  1. Filing05/07/86
  2. Publication01/06/87
  3. Examination05/26/87
  4. Allowance09/17/91
  5. Grant06/30/92
  6. Terminated09/26/95

The patent was granted on 06/30/1992 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Freeport Research and Engineering Company

US

Inventors

D. D. (pessoa física)

US

P. M. (pessoa física)

US

T. W. (pessoa física)

US

V. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

731.971 · 05/08/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

09/29/1987

RPI 884

Solicitação de exame técnico

#4.1

05/26/1987

RPI 866

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

06/30/1992

RPI 1126

Notificação para pagamento de retribuição

#13.1

01/21/1992

RPI 1103

Deferimento

#9.1

09/17/1991

RPI 1085

Exigência - art. 36 da LPI

#6.1

03/12/1991

RPI 1058

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