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Official data from INPI

PROCESSO PARA QUEIMAR COQUE DE PARTÍCULAS DE UM CATALISADOR QUE TÊM COQUE DEPOSITADO CONTENDO ENXOFRE E NITROGÊNIO.

ConcedidaInvention Patent

Application data

Number

PI8104064

Type

Invention Patent

Filing

05/26/1981

Publication

03/16/1982

Progress at the INPI

  1. Filing05/26/81
  2. Publication03/16/82
  3. Examination02/14/84
  4. Allowance06/11/85
  5. Grant07/29/86
  6. Terminated08/07/90

The patent was granted on 07/29/1986 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: 07/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company.

US

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Inventors

B. A. (pessoa física)

Technical data

Priority claims

US

163.535 · 06/27/1980

US

235.387 · 02/17/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/29/1986

RPI 823

110

04/29/1986

RPI 810

Recurso

#12.1

09/24/1985

RPI 779

Deferimento

#9.1

06/11/1985

RPI 764

Pedido de certificado de adição de invenção

#5.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

02/14/1984

RPI 695

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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