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Official data from INPI

PROCESSO PARA ISOMERIZAÇÃO DO TEOR DE XILENO DE UMA MISTURA DE CARGA DE COMPOSTO DE HIDROCARBONETO AROMÁTICO DE OITO ÁTOMOS DE CARBONO.

ConcedidaInvention Patent

Application data

Number

PI8003728

Type

Invention Patent

Filing

06/16/1980

Publication

02/16/1982

Progress at the INPI

  1. Filing06/16/80
  2. Publication02/16/82
  3. Examination11/08/83
  4. Allowance04/08/86
  5. Grant11/25/86
  6. Terminated02/04/92

The patent was granted on 11/25/1986 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: 11/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. C. (pessoa física)

US

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Inventors

M. R. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/25/1986

RPI 840

Notificação para pagamento de retribuição

#13.1

08/12/1986

RPI 825

Deferimento

#9.1

04/08/1986

RPI 807

Exigência - art. 36 da LPI

#6.1

10/09/1984

RPI 729

Solicitação de exame técnico

#4.1

11/08/1983

RPI 681

Publicação do pedido de patente

#3.1

02/16/1982

RPI 591

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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