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Official data from INPI

COMPOSICAO RELOGICA DE ARGILA ORGANOFILA DE AUTO-ATIVACAO

ConcedidaInvention Patent

Application data

Number

PI7901826

Type

Invention Patent

Filing

03/27/1978

Publication

-

Progress at the INPI

  1. Filing03/27/78
  2. Publication
  3. Examination
  4. Allowance08/23/88
  5. Grant07/25/89
  6. Terminated01/28/92

The patent was granted on 07/25/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC

See this company's full portfolio

Inventors

F. C. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

02/28/1989

RPI 958

9.1.3

10/04/1988

RPI 937

Deferimento

#9.1

08/23/1988

RPI 931

14.1

06/14/1988

RPI 921

Conhecimento de parecer técnico

#7.1

10/25/1983

RPI 679

6.2

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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