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Official data from INPI

COMPOSIÇÃO HERBICIDA SÓLIDA E PROCESSO PARA IMPEDIR A FORMAÇÃO DE CRISTAIS

ConcedidaInvention Patent

Application data

Number

PI7801826

Type

Invention Patent

Filing

03/22/1978

Publication

-

Progress at the INPI

  1. Filing03/22/78
  2. Publication
  3. Examination
  4. Allowance09/01/87
  5. Grant04/26/88
  6. Expired09/21/93

The letters patent expired on 09/21/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

J. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

780,377 · 03/23/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

12/29/1987

RPI 897

Deferimento

#9.1

09/01/1987

RPI 880

Deferimento

#9.1

06/22/1982

RPI 609

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era A01N 9/20.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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