International Bank of Washington reported record revenues and profits for the first six months of 1979.

For the six months ending June 30 earnings were $8 million ($1.10 a share), up 5.1 percent from the $7.6 million ($1.07) for the first half of 1978. Revenues for the first six months rose 13.5 percent to $12 million from $10.5 million during the first six months of last year.

Second quarter earnings increased 2.9 percent from $4.2 million (58 cents a share) last year to $4.3 million (59 cents a share). Revenues for the quarter also increased from $5.5 million last year to $6.3 million this year.

The B. F. Saul Real Estate Investment Trust of Chevy Chase reported third quarter earnings of 1.3 million (22 cents a share) compared with a loss of $909,000 (15 cents). Gain on sale of properties other than condominium conversions amounted to $2.2 million for the period this year and $536,000 for the same time last year.

Biospherics Inc., a Rockville-based environmental services company, reported an 89 percent increase in profits for the first six months this year. Earnings were $117,031 (16 cents a share) for the first six months this year compared with $61,836 (9 cents) last year. Revenues also increased 60 percent, the same periods to $2.3 million from $1.4 million.

Capital Mortgage Investments of Chevy Chase, reported earings of $2,000 for the quarter ended June 30, compared to a loss of $929,000 for the same period last year. For the first six months this year the firm earned $251,000 while it lost $111,000 in the same period last year.

Eastmet Corp., a Cockeysville, Md., stainless steel manufacturer reported a 68 percent increase in earnings from $1.7 million (58 cents a share) for the fourth quarter last year to $2.8 million (97 cents) for the fourth quarter ended June 30, this year. Revenues for the quarter increased 22 percent from $46.1 million last year to $56.1 million this year.

Earnings for the year were $7.9 million ($2.77 a share) up 37 percent from $5.8 million ($2.03) last year. Revenues for that period increased 10 percent from $180 million to $199 million.