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Official data from INPI

PROCESSOS PARA A HIDROGENÓLISE DE POLIÓIS, XILITOL E SORBITOL E GLICOL ETILÊNICO

ConcedidaInvention Patent

Application data

Number

PI8204224

Type

Invention Patent

Filing

07/21/1982

Publication

01/10/1984

Progress at the INPI

  1. Filing07/21/82
  2. Publication01/10/84
  3. Examination04/29/86
  4. Allowance12/16/86
  5. Grant07/28/87
  6. Terminated06/26/90

The patent was granted on 07/28/1987 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

M. T. (pessoa física)

US

Technical data

Priority claims

US

344.302 · 02/01/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Solicitação de exame técnico

#4.1

04/29/1986

RPI 810

Publicação do pedido de patente

#3.1

01/10/1984

RPI 690

Pedido de patente depositado

#2.1

08/31/1982

RPI 619

Anuidade - prazo legal encerrado

#18.2

06/26/1990

RPI 1024

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