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Official data from INPI

PROCESSO PARA PRODUÇÃO DE CARGAS DE SÍLICA DE REFORÇO HIDRÓFOBA E CARGAS ASSIM OBTIDAS.

ConcedidaInvention Patent

Application data

Number

PI8108632

Type

Invention Patent

Filing

05/29/1981

Publication

04/13/1982

Progress at the INPI

  1. Filing05/29/81
  2. Publication04/13/82
  3. Examination04/12/83
  4. Allowance11/10/87
  5. Grant05/31/88
  6. Terminated11/08/94

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

L. M. (pessoa física)

Technical data

IPC Classification

Priority claims

US

156.002 · 06/03/1980

US

81/00765 · 05/29/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Republicação - classificação IPC

#15.11

05/19/1987

RPI 865

Exigência - art. 36 da LPI

#6.1

04/14/1987

RPI 860

Solicitação de exame técnico

#4.1

04/12/1983

RPI 651

Notificação de entrada na fase nacional - PCT

#1.3

04/13/1982

RPI 599

Anuidade - prazo legal encerrado

#18.2

11/08/1994

RPI 1249

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